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{{Short description|Historic 45.52-carat diamond of deep-blue color}}
{{Use mdy dates|date=July 2023}}
{{Coord|38.89094|N|77.02573|W|display=title}} 
{{Infobox diamond
| name = Hope Diamond
| image = Hope Diamond.jpg
| caption = The Hope Diamond on display at the [[National Museum of Natural History]] in [[Washington, D.C.]]
| weight = {{convert|45.52|carat|g oz}}
| color = Fancy Dark Greyish Blue (GTA)
| cut = Antique cushion
| mine = [[Kollur Mine]]
| country = India
| cutter = Wilhelm Fals
| found = Jean-Baptiste Tavernier
| original_owner = [[Jean-Baptiste Tavernier]]
| owner = [[Smithsonian Institution]]
| value = US$200–350 million
}}

The '''Hope Diamond''' is a {{convert|45.52|carat|g oz|adj=on}} [[blue diamond]] that has been famed for its great size and blue-violet colour since the 17th century. It was extracted in the 17th century from the [[Kollur Mine]] in [[Andhra Pradesh]], India.<ref name="McCabe">{{Cite book |last=McCabe |first=Ina Baghdiantz |url=https://books.google.com/books?id=WWatAwAAQBAJ |title=Orientalism in Early Modern France: Eurasian Trade, Exoticism, and the Ancien Régime |publisher=Berg Publishers |year=2008 |isbn=978-1845203-74-0 |pages=111–112 |access-date=28 September 2020}}</ref><ref>{{Cite web |last=Brickell |first=Francesca Cartier |title=The Secret History Of The Hope Diamond: How Pierre Cartier Sold A Cursed Jewel |url=https://www.forbes.com/sites/forbesdigitalcovers/2019/12/06/secret-history-hope-diamond-the-cartiers-book-excerpt/ |access-date=2021-12-12 |website=Forbes |language=en}}</ref>  The [[diamond (gemstone)|gemstone's]] exceptional size has revealed new information about the formation of diamonds.<ref>{{Cite web |title=What Secrets Lie in The Hope Diamond? |url=https://www.si.edu/object/what-secrets-lie-hope-diamond%3Ayt_kiH10-XdZjg |access-date=2021-12-12 |website=Smithsonian Institution |language=en}}</ref>

The Hope Diamond's recorded history begins in 1666, when the French gem merchant [[Jean-Baptiste Tavernier]] purchased the raw  [[Golconda diamonds|Golconda]] stone in [[India]].<ref name="Wise2010Time3">{{Cite web |last=Wise |first=Richard W. |date=2010 |title=Historical Time Line, The French Blue / Part III |url=https://thefrenchblue.com/timeline3.htm |access-date=May 9, 2015 |website=The French Blue}}</ref> After [[diamond cutting|cutting]] the gem and renaming it "the French Blue" (''Le bleu de France''), Tavernier sold it to King [[Louis XIV]] of France in 1668. It was stolen in 1792, received and re-cut, with the diamond appearing under the Hope name in an 1839 gem catalogue from the [[Hope & Co.|Hope banking family]], from whom the diamond's name derives.

The Hope Diamond's last private owner was the American jeweler [[Harry Winston]], who bought it in 1949 from the [[estate (law)|estate]] of the mining heiress and socialite [[Evalyn Walsh McLean]]. After exhibiting the diamond on tour for several years, Winston set it in a necklace and it was donated in 1958 to the [[Smithsonian Institution]]'s [[National Museum of Natural History]] in [[Washington, D.C.]], where it remains on permanent exhibition.

==Classification==
[[File:The Hope Diamond - SIA.jpg|thumb|alt=Picture of a diamond.|The Hope Diamond in 1974]]

The Hope Diamond is a large, {{convert|45.52|carat|g oz|adj=on}},{{efn|The diamond's weight was formerly thought to be {{convert|44+3/8|carat|g|2}},<ref name=twsI44jj/> but it was re-weighed in 1974 to confirm as {{convert|45.52|carat|g|2}}.<ref name="si.edu" />}}<ref name="nyt">{{Cite news |last=Hevesi |first=Dennis |date=April 6, 2008 |title=George Switzer, 92, Dies; Started a Gem Treasury |work=[[New York Times]] |url=https://www.nytimes.com/2008/04/06/us/06SWITZER.html |access-date=April 9, 2008}}</ref><ref name=twsI44hh/><ref name="twsI44kk">{{Cite news |last1=David Beresford |last2=Lee Glendinning |date=August 28, 2007 |title=Miners unearth world's biggest diamond |work=The Guardian |location=London |url=https://www.theguardian.com/world/2007/aug/28/southafrica.davidberesford |access-date=July 9, 2011 |quote=The world's biggest diamond, believed to be twice the size of the Cullinan, has been discovered in the North-West Province of South Africa.... The Hope Diamond is a large, deep blue diamond, originating perhaps in [[India]]. It is legendary for the curse it supposedly puts on whoever possesses it. Previous owners include Kings Louis XV and XVI and Marie Antoinette.}}</ref> deep-blue [[diamond]], studded in a pendant ''Toison d ’or''.<ref name="McCabe" /> It is a [[Shades of blue|dark greyish-blue]] color under ordinary light due to trace amounts of [[boron]] within its crystal structure, and it exhibits a red [[phosphorescence]] under exposure to [[ultraviolet]] light.<ref>[https://abcnews.go.com/Technology/wireStory?id=4099419 ''UV Light Makes Hope Diamond Glow Red'']; Schmid, Randolph E.; [[ABC News (United States)|ABC News]]; text= "The diamond glows only after the light has been switched off ... the glow can last for anything up to 2 minutes..."; January 7, 2008</ref><ref>[http://newsdesk.si.edu/images_full/images/museums/nmnh/Hope_Diamond/red%20hope%20diamond.jpg ''The Hope Diamond phosphoresces a fiery red color when exposed to ultraviolet light''] {{Webarchive|url=https://web.archive.org/web/20201212174734/http://www.news/ |date=December 12, 2020 }}; Hatelberg, John Nels; Smithsonian Institution.</ref> It is classified as a [[Diamond type|type IIb diamond]].

The Hope Diamond is currently housed in the [[National Gem and Mineral collection]] at the National Museum of Natural History in Washington, D.C.<ref>{{Cite web |title=Hope Diamond |url=https://www.si.edu/object/hope-diamond%3Anmnhmineralsciences_1001299 |access-date=2022-01-11 |website=Smithsonian Institution |language=en}}</ref> It has changed hands numerous times on its way from [[Hyderabad]], India, to France, Great Britain, and the United States, where it is on public display. It has been described as the "most famous diamond in the world".<ref name="twsI34">{{Cite news |last=Glenn Osten Anderson – Dr. Jeffrey Post (Smithsonian) |date=October 2, 2009 |title=The Hope Diamond revealed: The Smithsonian Institution in Washington displays the Hope Diamond without a setting for the first time in history |work=The Guardian |location=London |url=https://www.theguardian.com/culture/video/2009/oct/02/hope-diamond-smithsonian-washington-setting |access-date=July 9, 2011 |quote=(video)}}</ref>

==Physical properties==
*'''Weight''': In December 1988, the [[Gemological Institute of America]]'s laboratory determined the diamond to weigh {{convert|45.52|carat|g oz}}.<ref name="twsI44fof" />
* '''Size and shape''': The diamond has been compared in size and shape to a pigeon egg<ref name=twsI35/> or a [[walnut]]<ref name=twsI41/><ref name=twsI44bb/> that is pear-shaped.<ref name=twsI44bb/> The length, width, and depth are 25.60&nbsp;mm × 21.78&nbsp;mm × 12.00&nbsp;mm (1&nbsp;in × 7/8&nbsp;in × 15/32&nbsp;in).<ref name=twsI44fof/>
* '''Color''': It has been described as being a "fancy dark greyish-blue"<ref name=twsI44fof/> as well as "dark blue in color,"<ref name=twsI44bb/> or having a "steely-blue" color.<ref name=twsI44ll/> [[Blue diamonds]] similar to the Hope can be shown by [[Tristimulus colorimeter|colorimetric]] measurements to be grayer (lower in [[saturation (color theory)|saturation]]) than blue sapphires.<ref>Hofer, Stephen, ''Collecting and Classifying Colored Diamonds'', p. 414 {{ISBN?}}</ref> In 1996, the Gemological Institute of America examined the diamond and, using their proprietary scale, graded it ''fancy deep grayish blue''.

[[File:Hope Diamond Closeup.jpg|thumb|alt=Hope Diamond in the National Museum of Natural History, Washington DC.|The Hope Diamond in the [[National Museum of Natural History]], Washington D.C., 2014.<ref>King, et al., "[https://archive.today/20120709173352/http://gia.metapress.com/content/q0n20t64308783g1/?p=c8bfbd0054ca46439c66bbd5f3ccceb3&pi=1 Characterizing Natural-color Type IIb Blue Diamonds]", ''[[Gems & Gemology]]'', Vol. 34, #01, p. 249</ref>]]

Visually, the gray modifier (mask) is so dark (indigo) that it produces an "inky" effect, appearing almost blackish-blue in [[incandescent light]].<ref name="Wise" /> Current photographs of the Hope Diamond use high-intensity light sources that tend to maximize the brilliance of gemstones.<ref>Wise, ibid. pp. 29–30</ref> In popular literature, many superlatives have been used to describe the Hope Diamond as a "superfine deep blue," often comparing it to the color of a fine [[sapphire]]—for example, "blue of the most beautiful blue sapphire" (Deulafait)—and describing its color as "a sapphire blue."<ref name="Wise">Wise, Richard W., ''Secrets of the Gem Trade, The Connoisseur's Guide to Precious Gemstones'', Ch. 38, p. 235. {{ISBN|0-9728223-8-0}}.</ref><ref name="twsI44jj">{{Cite news |date=May 6, 1908 |title=Hope Diamond Is Sold; Sultan Said to Have Paid $400,000 for Famous Gem |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F00D10FA3F5A17738DDDAF0894DD405B888CF1D3 |access-date=July 9, 2011 |quote=The stone is a sapphire blue diamond weighing 44 3/8 carats...}}</ref><ref>Note: Other references include Mawe (1823), Ball (1835), Bruton (1978), Tolansky (1962). However, these descriptions are somewhat wide of the mark.</ref> Tavernier described it as a "beautiful violet".<ref name="twsI44fof" />
* '''Phosphorescence''': The stone exhibits an unusually intense, brilliant red [[phosphorescence]] after exposure to short-wave ultraviolet light. This 'glow-in-the-dark' effect persists for some time after the light source has been switched off, and this strange quality may have helped fuel its reputation of being "cursed."<ref name=twsI35/> The red glow is a phenomenon of blue diamonds that helps scientists "fingerprint" them, allowing them to distinguish real ones from artificial ones.<ref name=twsI44hh/> The red glow occurs because of a mix of [[boron]] and [[nitrogen]] in the stone.<ref name="twsI44hh">{{Cite news |last=Randolph E. Schmid, Associated Press |date=January 8, 2008 |title=Blue diamonds have a red glow about them |work=USA Today |url=https://www.usatoday.com/tech/science/discoveries/2008-01-08-hope-diamond-glow_N.htm |access-date=July 9, 2011}}</ref>
* '''Clarity''': The clarity was determined to be VS1, with whitish graining present.<ref name=twsI44fof/>
* '''Cut''': The cut was described as being "cushion antique brilliant with a faceted girdle and extra facets on the pavilion."<ref name=twsI44fof/>
* '''Chemical composition''': In 2010, the diamond was removed from its setting to measure its [[chemical formula|chemical composition]]. After boring a hole one [[nanometer]] deep, preliminary experiments detected the presence of [[boron]], [[hydrogen]], and possibly [[nitrogen]]; the boron concentration varies from zero to eight parts per million.<ref>{{Cite magazine |last=Caputo |first=Joseph |date=November 2010 |title=Testing the Hope Diamond |url=http://www.smithsonianmag.com/science-nature/Testing-the-Hope-Diamond.html |url-status=dead |magazine=[[Smithsonian (magazine)|Smithsonian]] |archive-url=https://web.archive.org/web/20110113061200/http://www.smithsonianmag.com/science-nature/Testing-the-Hope-Diamond.html |archive-date=January 13, 2011 |access-date=January 15, 2011}}</ref> The boron is responsible for causing the blue color of the stone.<ref name=twsI44ee/>
* '''Touch and feel''': When [[Associated Press]] reporter [[Ron Edmonds]] was allowed by Smithsonian officials to hold the gem in his hands in 2003, he wrote that the first thought that had come into his mind was, "Wow!"<ref name="twsI44ee">{{Cite news |date=October 3, 2003 |title=Hope Diamond still holds allure |work=USA Today |agency=Associated Press |url=https://www.usatoday.com/news/science/2003-10-03-hope-diamond_x.htm |access-date=July 9, 2011 |quote=The Hope Diamond, center, is tested at the Smithsonian's Natural History Museum in Washington to try to determine what impurities give it its blue colors. ... By Ron Edmonds, AP ...}}</ref> It was described as "cool to the touch."<ref name=twsI44ee/> He wrote:
{{blockquote|You cradle the 45.5-carat stone—about the size of a walnut and heavier than its translucence makes it appear—turning it from side to side as the light flashes from its facets, knowing it's the hardest natural material yet fearful of dropping it.|[[Associated Press]] reporter Ron Edmonds in 2003<ref name=twsI44ee/>}}
* '''Hardness''': Diamonds in general, including the Hope Diamond, are the hardest natural minerals known on [[Earth]], but, because of weak planes in the bonds of a diamond's crystalline structure, the crystal can fracture along these planes if not handled correctly. These weak planes allow diamond cutters to split a rough uncut stone into smaller flawless parts before the process of faceting the stone takes place. Only a diamond can scratch another diamond, so, to create a faceted diamond, the uncut rough is mounted in a holder, and then the flat surfaces or facets are ground into the surface of the stone using specially made metal wheels impregnated with diamond particles. These facets are ground and polished using ever finer grades/grits of diamond powder until they have a clear mirror surface, ultimately producing a gem that sparkles by refracting and reflecting light in different ways.<ref name="twsOctU777">{{Cite news |last=Bergeron |first=Louis |date=2011-10-17 |title=Amorphous diamond, a new super-hard form of carbon created under ultrahigh pressure |language=en |work=[[Science Daily]] |url=https://www.sciencedaily.com/releases/2011/10/111017155714.htm |url-status=live |access-date=2011-10-21 |archive-url=https://web.archive.org/web/20230203142943/http://www.sciencedaily.com/releases/2011/10/111017155714.htm |archive-date=2023-02-03}}</ref>

==History==
===Geological beginnings===
The Hope Diamond was formed deep within the [[Earth]] approximately 1.1 [[billion]] years ago. Like all [[diamond]]s, it was formed when [[carbon]] atoms formed strong bonds with each other. The Hope Diamond was originally embedded in [[kimberlite]] and was later extracted and refined to form the current gem. The Hope Diamond contains trace amounts of boron atoms intermixed with the carbon structure, which results in the rare blue color of the diamond.<ref name="twsI44oox">{{Cite news |date=July 9, 2011 |title=The Hope Diamond in Full Color |publisher=Smithsonian National Museum of Natural History |url=http://www.mnh.si.edu/earth/text/2_1_1_2.html |url-status=dead |access-date=July 9, 2011 |archive-url=https://web.archive.org/web/20110525121643/http://www.mnh.si.edu/earth/text/2_1_1_2.html |archive-date=May 25, 2011 |quote=Why Is It Blue? Light interacts with an impurity in the diamond to produce the unusual color. As the diamond grew, a few atoms of the element boron entered the crystal structure. The addition of just one boron atom for every million carbon atoms is enough to cause the deep blue color. Blue diamonds are extremely rare. Only about one in 100,000 diamonds is strongly colored, and blue is one of the rarest colors.}}</ref>

{{blockquote|People typically think of the Hope Diamond as a historic gem, but... it's [important] as a rare scientific specimen that can provide vital insights into our knowledge of diamonds and how they are formed in the earth.|Jeffrey Post, Smithsonian curator, 2008<ref name=twsI44hh/>}}

===India===
{{multiple image
| align = right
| image1 = Schets van de ruwe Hope diamant door Tavernier.jpg
| width1 = 160
| alt1 =
| caption1 = [[Jean-Baptiste Tavernier]]'s original sketch of the Tavernier Blue
| image2 = SucherTavernierBlueReplicaRW.jpg
| width2 = 160
| alt2 =
| caption2 = [[Cubic zirconia]] replica of the Tavernier Blue
| footer =
}}

Several accounts, based on remarks written by French gem merchant [[Jean-Baptiste Tavernier]], who obtained the gem in India in 1666, suggest that the gemstone originated in [[India]], in the [[Kollur mine]] in the [[Guntur]] district of [[Andhra Pradesh]] (which, at the time, was part of the [[Qutb Shahi dynasty|Golconda kingdom]] of the [[Qutb Shahi dynasty]]).<ref>''India Before Europe'', C.E.B. Asher and C. Talbot, Cambridge University Press, 2006, {{ISBN|0-521-80904-5}}, p. 40</ref><ref>''A History of India'', Hermann Kulke and Dietmar Rothermund, 3rd ed., Routledge, 1998, p. 160; {{ISBN|0-415-15482-0}}</ref><ref>''Deccan Heritage'', H. K. Gupta, A. Parasher and D. Balasubramanian, Indian National Science Academy, 2000, p. 144, Orient Blackswan, {{ISBN|81-7371-285-9}}</ref>

Tavernier's book, the ''Six Voyages'' (French: ''Les Six Voyages de J. B. Tavernier''), contains sketches of several large diamonds that he sold to King [[Louis XIV]], possibly in 1668<ref name=twsI35/> or 1669; a blue diamond is shown among these, and Tavernier mentions the mines at "Gani Coulour" (Kollur Mine) as a source of colored diamonds, but no direct mention of the stone is made. Historian [[Richard Kurin]] has built a highly speculative case for 1653 as the year of acquisition,<ref name="Kurin1">Kurin, Richard ''Hope Diamond, The Legendary History of a Cursed Gem'', pp. 29–30</ref> but the most that can be said with certainty is that Tavernier obtained the blue diamond during one of his five voyages to India between the years 1640 and 1667. One report suggests he took 25 diamonds to [[Paris]], including the large rock which became the Hope, and sold all of them to King Louis XIV.<ref name=twsI44ff/> Another report suggested that in 1669, Tavernier sold this large blue diamond along with approximately one thousand other diamonds to King Louis XIV for 220,000 [[French livre|livres]]—the equivalent of 147 kilograms of pure gold.<ref name=twsI44bb/><ref>Morel, Bernard, ''The French Crown Jewels'', p. 158.</ref>

In the historical novel, ''The French Blue'', gemologist and historian Richard W. Wise proposes that the [[Letters patent|patent of nobility]] granted to Tavernier by Louis XIV was part of the payment for the Tavernier Blue. According to the theory, [[Jean-Baptiste Colbert]] (the King's Finance Minister at the time) regularly sold noble offices and titles for cash; an outright [[patent of nobility]], according to Wise, was worth approximately 500,000 livres. That amount, plus the reported sale to the King, would have totaled about 720,000 livres, half the price of Tavernier's initial estimate for the gem.<ref>Wise, Richard W., ''The French Blue'', Brunswick House Press, 2010, Afterword p. 581. {{ISBN|978-0-9728223-6-7}}.</ref> There has been controversy regarding the actual weight of the stone: Morel believed that the {{convert|112.1875|carat|g oz|adj=on}}<ref name=twsI44jj/> stated in Tavernier's invoice would be in old French carats, thus 115.28 metric carats.

=== France ===
[[File:Toison.jpg|thumb|upright|Gouache of the great Golden Fleece of King [[Louis XV]], version 1 of 2008, painted by Pascal Monney (c. 16 × 6 cm).]]

In 1678, Louis XIV commissioned the [[Royal court|court]] [[Jewellery|jeweler]] Jean Pitau to recut the Tavernier Blue, resulting in a {{convert|67.125|carat|g oz|adj=on}} stone<ref name=twsI44fof/> which royal inventories thereafter listed as the '''Blue Diamond of the Crown of France''' ({{langx|fr|diamant bleu de la Couronne de France}}<ref>{{Cite web |last=Farges |first=François |date=September 18, 2008 |title=Two new discoveries concerning the "diamant bleu de la Couronne" ("French Blue" diamond) at the Muséum national d'Histoire naturelle in Paris |url=http://mineralsciences.si.edu/abstracts/farges.htm |url-status=dead |archive-url=https://web.archive.org/web/20140701095543/http://mineralsciences.si.edu/abstracts/farges.htm |archive-date=July 1, 2014 |access-date=August 29, 2014 |publisher=Stanford University & Le Muséum National d'Histoire Naturelle}}</ref>). Later English-speaking historians have simply called it the French Blue. The king had the stone set on a [[Cravat (early)|cravat]]-pin.<ref name="Morel, p.166">Morel, p. 166</ref>

According to one report, Louis ordered Pitau<ref>alternate possible name: Jean Pitau (1617–1676)</ref> to "make him a piece to remember", and Pitau worked for two years, resulting in a "triangular-shaped {{convert|69|carat|g oz|adj=on}} gem the size of a [[pigeon]]'s egg that took the breath away as it snared the light, reflecting it back in bluish-grey rays."<ref name=twsI44ll/> It was set in [[gold]] and was supported by a [[ribbon]] for the neck which was worn by the king during ceremonies.<ref name=twsI44fof/>

{{blockquote|At the diamond's dazzling heart was a sun with seven facets—the sun being Louis' emblem, and seven being a number rich in meaning in biblical cosmology, indicating divinity and spirituality.|report by Agence France-Presse, 2008<ref name=twsI44ll/>}}

[[File:Marie Antoinette Execution.jpg|thumb|[[Marie Antoinette]] before her public execution by [[guillotine]] on [[Place de la Concorde|''Place de la Révolution'']], on October 16, 1793.]]
In 1749, Louis XIV's great-grandson, [[Louis XV]], had the French Blue set into a more elaborate jeweled [[pendant]] for the ''[[Order of the Golden Fleece]]'' by court jeweler André Jacquemin.<ref name=twsI44fof/> The assembled piece included a red [[spinel]] of {{convert|107|carat|g oz|adj=on}} carats shaped as a [[dragon]] breathing "covetous flames," as well as 83 red-painted diamonds and 112 yellow-painted diamonds to suggest a [[Wool|fleece]] shape.<ref name=twsI44ll/>

The piece fell into disuse after the death of Louis XV. The diamond became the property of his grandson [[Louis XVI]].<ref name="twsI44bb" /> whose wife, queen [[Marie Antoinette]], used many of the [[French Crown Jewels]] for personal adornment by having the individual gems placed in new settings and combinations, but the French Blue remained in this pendant (except for a brief time in 1787, when the stone was removed for scientific study by [[Mathurin Jacques Brisson]]).

=== Theft, disappearance and concealment ===
On September 11, 1792, while Louis XVI and his family were imprisoned in the [[Square du Temple]] during the early stages of the French Revolution's [[Reign of Terror]], a group of thieves broke into the Royal Storehouse—the ''Hôtel du Garde-Meuble de la Couronne'' (now ''[[Hôtel de la Marine]]'')—stealing most of the Crown Jewels in a five-day looting spree.<ref name="twsI44ll" /> While many jewels were later recovered, including other pieces of the ''Order of the Golden Fleece'', the French Blue was not among them and it disappeared from history.<ref name="twsI35" />

On January 21, 1793, Louis XVI was [[guillotine]]d; Marie Antoinette was guillotined on October 16 of the same year. These beheadings are commonly cited as a result of the diamond's "curse," but the historical record suggests that Marie Antoinette had never worn the Golden Fleece pendant because it had been reserved for the exclusive use of the King.<ref>{{Cite web |title=The Order of the Golden Fleece {{!}} European knighthood order |url=https://www.britannica.com/topic/The-Order-of-the-Golden-Fleece |access-date=2021-05-08 |website=Encyclopedia Britannica |language=en}}</ref>

A likely scenario is that the French Blue, sometimes also known as the Blue Diamond,<ref name=twsI44ll/> was "swiftly smuggled to [[London]]" after being seized in 1792 in Paris.<ref name=twsI44ll/> But, the exact rock known as the French Blue was never seen again, since it almost certainly was recut during this decades-long period of anonymity,<ref name=twsI44ll/> with the largest remaining piece becoming the Hope Diamond. One report suggested that the cut was a "butchered job" because it sheared off {{convert|23.5|carat|g oz|adj=on}} from the larger rock as well as hurting its "extraordinary luster."<ref name=twsI44ll/>

It was long believed that the Hope Diamond was cut from the French Blue,<ref name="twsI44mm" /> but confirmation came when a three-dimensional [[lead]]en model of the latter was rediscovered in the archives of the Paris [[National Museum of Natural History (France)|National Museum of Natural History]] in 2005. Previously, the dimensions of the French Blue had been known only from two drawings made in 1749 and 1789; although the model differs slightly from the drawings in some details, these details are identical to features of the Hope Diamond, allowing [[Computer-aided design|CAD]] technology to digitally reconstruct the French Blue around the recut stone.<ref>{{Cite web |date=February 7, 2007 |title=Francois Farges Abstract |url=http://mineralsciences.si.edu/abstracts/farges.htm |url-status=dead |archive-url=https://web.archive.org/web/20110716115217/http://mineralsciences.si.edu/abstracts/farges.htm |archive-date=July 16, 2011 |access-date=October 11, 2010 |publisher=Mineralsciences.si.edu}}</ref><ref>[https://www.nbcnews.com/id/wbna6946421 Hope Diamond originally came from French crown]  Associated Press</ref>

The leaden model revealed 20 unknown facets on the back of the French Blue. It also confirmed the diamond underwent a rather rough recut that removed the three points and reduced the thickness by a few millimeters. The [[Louis XIV|Sun King]]'s blue diamond became unrecognizable and the baroque style of the original cut was definitely lost.

Historians suggested that one burglar, Cadet Guillot, took several jewels, including the French Blue and the ''Côte-de-Bretagne'' [[spinel]], to [[Le Havre]] and then to [[London]], where the French Blue was cut in two pieces.

Morel adds that in 1796, Guillot attempted to resell the ''Côte-de-Bretagne'' in France but was forced to relinquish it to fellow thief Lancry de la Loyelle, who put Guillot into [[debtors' prison]].

In a contrasting report, historian Richard Kurin speculated that the "theft" of the French Crown Jewels was in fact engineered by the revolutionary leader [[Georges Danton]] as part of a plan to bribe an opposing military commander, [[Charles William Ferdinand, Duke of Brunswick|Duke Karl Wilhelm of Brunswick]].<ref name=twsI44ll/> When under attack by [[Napoleon]] in 1805, Karl Wilhelm may have had the French Blue recut to disguise its identity; in this form, the stone could have come to Great Britain in 1806, when his family fled there to join his daughter [[Caroline of Brunswick]]. Although Caroline was the wife of the Prince Regent (later King [[George IV]]), she lived apart from her husband, and financial straits sometimes forced her to quietly sell her own jewels to support her household. Caroline's nephew, [[Charles II, Duke of Brunswick|Duke Karl Friedrich]], was later known to possess a {{convert|13.75|carat|g oz|adj=on}} blue diamond which was widely thought to be another piece of the French Blue.

This smaller diamond's present whereabouts are unknown. A 2010 three-dimensional reconstruction of the French Blue from an authenticated lead cast of the jewel fits too tightly around the Hope Diamond to allow for the existence of a sister stone of that size, and concluded that there could be no significant offcuts from refaceting the French Blue into the Hope Diamond.<ref name="gia2010">{{cite journal |last1=Sucher |first1=Stephen D. |last2=Attaway |first2=Stephen W. |last3=Attaway |first3=Nancy L. |last4=Post |first4=Jeffrey E. |title=Possible “Sister” Stones of the Hope Diamond |journal=Gems and Gemology |date=Spring 2010 |volume=46 |issue=1 |pages=28-35 |url=https://www.gia.edu/gems-gemology/spring-2010-sister-stones-hope-diamond-sucher |access-date=22 October 2025}}</ref>

=== United Kingdom ===
A blue diamond with the same shape, size, and color as the Hope Diamond was recorded by [[John Francillon]] as in the possession of the London diamond merchant [[Daniel Eliason]] in September 1812, the earliest point when the history of the Hope Diamond can be definitively fixed,<ref name="twsI44fof">{{Cite magazine |date=July 11, 2011 |title=The Hope Diamond |url=http://www.si.edu/Encyclopedia_SI/nmnh/hope.htm |magazine=The Smithsonian |access-date=July 11, 2011}}</ref><ref name=twsI44ll/> although a second, less definitive report claims that the Hope Diamond's "authentic history" can only be traced back to 1830.<ref name="twsI44mm">{{Cite news |last=Willson |first=T. Edgar |date=February 7, 1911 |title=Editor Jewelers' Circular Writes of the Stories of Misfortunes |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=FA0F11FF355A15738DDDA00894DA405B818DF1D3 |access-date=July 9, 2011 |quote=As far as he can learn, the authentic history of this gem goes back only to 1830...}}</ref> The jewel was a "massive blue stone of {{convert|45.54|carat|g oz|adj=on}}"<ref name=twsI44ll/> and weighed {{convert|177|gr|abbr=on}} ({{convert|4|gr|abbr=on}} = 1 carat).<ref name=twsI44fof/> The 1812 date was just days after 20 years since the theft of the French Blue, just as the [[statute of limitations]] for the crime had taken effect.<ref name=twsI44ll/>

While the diamond had disappeared for two decades, there were questions whether this diamond now in Great Britain was exactly the same one as had belonged to the French kings. Scientific investigation in 2008 confirmed "beyond reasonable doubt" that the Hope Diamond and that owned by the kings of France were, indeed, the same gemstone.<ref name="twsI44fof" /><ref name="twsI44ll">{{Cite news |last=Agence France-Presse |date=November 18, 2008 |title=U.S. has Sun King's stolen gem, say French experts |publisher=Canada.com |url=http://www.canada.com/story_print.html?id=1f5933e7-add6-4bd8-a98a-b7edc1819129&sponsor= |url-status=dead |access-date=July 9, 2011 |archive-url=https://web.archive.org/web/20121110135923/http://www.canada.com/story_print.html?id=1f5933e7-add6-4bd8-a98a-b7edc1819129&sponsor= |archive-date=November 10, 2012 |quote=French experts said on Tuesday they had proof that the Hope Diamond, a star exhibit in Washington's Smithsonian Institution, is a legendary gem once owned by King Louis XIV that was looted in the French Revolution. New evidence unearthed in France's National Museum of Natural History shows beyond reasonable doubt that the Hope Diamond is the same steely-blue stone once sported by the Sun King, they said.}}</ref>

[[File:George IV 1821 color.jpg|thumb|[[Portrait of George IV|Coronation portrait]] of [[George IV]]]]
[[File:QueenCaroline1820.jpg|thumb|There is speculation that George's wife, [[Caroline of Brunswick]], may have helped procure the diamond for the British monarch, but records are lacking.]]
There are conflicting reports about what happened to the diamond during these years. Eliason's diamond may have been acquired by [[George IV]],<ref name=twsI35/> possibly through [[Caroline of Brunswick]];<ref name=twsI44ll/> however, there is no record of the ownership in the [[Royal Archives]] at Windsor, although some secondary evidence exists in the form of contemporary writings and artwork, and George IV tended to mix up the Crown property of the [[Crown jewels]] with family heirlooms and his own personal property.

A source at the Smithsonian suggested there were "several references" suggesting that George had indeed owned the diamond.<ref name=twsI44fof/> After his death in 1830, it has been alleged that some of this mixed collection was stolen by George's last mistress, [[Elizabeth Conyngham, Marchioness Conyngham|Elizabeth Conyngham]], and some of his personal effects were discreetly liquidated to cover the many debts he had left behind him. Another report states that the king's debts were "so enormous" that the diamond was probably sold through "private channels".<ref name=twsI44fof/> In either case, the blue diamond was not retained by the British royal family.

The stone was later reported to have been acquired by a rich London banker named [[Thomas Hope (1769–1831)|Thomas Hope]], for either $65,000<ref name=twsI44bb/> or $90,000.<ref name=twsI44jj/> It has been suggested that Eliason may have been a "front" for Hope,<ref name=twsI44ll/> acting not as a diamond merchant venturing money on his own account, but rather as an agent to acquire the diamond for the banker. In 1839, the Hope Diamond appeared in a published catalog of the gem collection of his brother [[Henry Philip Hope]], members of the Anglo-Dutch banking family [[Hope & Co.]]<ref name=twsI44fof/>

The stone was set in a fairly simple [[medallion]] surrounded by many smaller white diamonds, which he sometimes lent to Louisa de la Poer Beresford, the widow of his brother, Thomas Hope, for society [[Ball (dance)|balls]]. After falling into the ownership of the Hope family, the stone came to be known as the "Hope Diamond".<ref name="twsI44bb" />

Henry Philip Hope died in 1839, the same year as the publication of his collection catalog. His three nephews, the sons of Thomas and Louisa, fought in court for ten years over his inheritance, and ultimately the collection was split up. The oldest nephew, [[Henry Thomas Hope]], received eight of the most valuable gems, including the Hope Diamond. It was displayed in the [[Great Exhibition]] of London in 1851 and at the [[Exposition Universelle (1855)|1855 Exposition Universelle in Paris]], but was usually kept in a bank vault. In 1861, Henry Thomas Hope's only child, Henrietta, married [[Henry Pelham-Clinton, 6th Duke of Newcastle|Henry Pelham-Clinton]] (and later [[Duke of Newcastle]]).

When Hope died on December 4, 1862, his wife Anne Adele inherited the gem, but she feared that the profligate lifestyle of her son-in-law might cause him to sell the Hope properties. Upon Adele's death in 1884, the entire Hope estate, including the Hope Diamond, was entrusted to Henrietta's younger son, [[Francis Pelham-Clinton-Hope, 8th Duke of Newcastle-under-Lyne|Henry Francis Pelham-Clinton]], on the condition that he add the name of "Hope" to his own surnames when he reached the age of legal majority.

As Lord Francis Hope, this grandson received his legacy in 1887. However, he had only a [[Life estate|life interest]] in his inheritance, meaning that he could not sell any part of it without court permission.

In 1894, Lord Francis Hope met the American concert hall singer [[May Yohé]], who has been described as "the sensation of two continents",<ref name="twsI44bb" /> and they were married the same year; one account suggests that Yohé wore the Hope Diamond on at least one occasion.<ref name="twsI44bb" />

She later claimed that she had worn it at social gatherings and had an exact replica made for her performances, but her husband claimed otherwise. Lord Francis lived beyond his means, and this eventually caught up with him, leading to marriage troubles and financial reverses, and he found that he had to sell the diamond.<ref name="twsI44bb" />

In 1896, his [[bankruptcy]] was discharged, but, as he could not sell the Hope Diamond without the court's permission, he was supported financially by his wife during these intervening years. In 1901, the financial situation had changed, and after a "long legal fight,"<ref name="twsI44ff" /> he was given permission to sell the Hope Diamond by an order of the Master in Chancery<ref name="twsI44ff" /> to "pay off debts".<ref name="twsI44ll" /> But May Yohé ran off with a gentleman friend named Putnam Strong, who was a son of the former [[New York City]] mayor [[William L. Strong]]. Francis Hope and May Yohé were divorced in 1902.<ref name="twsI44bb" />

Francis sold the diamond for £29,000 (£{{formatnum:{{Inflation|UK|0.029|1901|r=2}}}} million today), to Adolph Weil, a London jewel merchant. Weil sold the stone in 1901<ref>{{Cite news |last=<!--Staff writer(s); no by-line.--> |date=14 November 1901 |title=£30,000 for the Hope Diamond |work=Leeds Mercury |location=England |url=https://www.britishnewspaperarchive.co.uk/viewer/bl/0000747/19011114/181/0006 |url-access=subscription |access-date=15 October 2022 |via=British Newspaper Archive}}</ref> to the diamond dealer Simon Frankel, based in New York and/or London<ref name=twsI44bb/> who took it to New York. One report stated that he had paid $250,000 (${{Inflation|US|0.25|1901|r=1|fmt=c}} million today).<ref name="twsI44ff">{{Cite news |date=November 14, 1901 |title=Hope Diamond Coming Here: The Famous Blue Stone Bought by a New Yorker – Price Said to be $250,000. |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F60A10FC3C5F12738DDDAD0994D9415B818CF1D3 |access-date=July 9, 2011 |quote=The report that the famous Hope blue diamond is going to New York is correct. It is in the possession of a member of a New York firm now on his way to America from London. The heirloom was sold by order of the Master in Chancery.}}</ref> However, in New York it was evaluated to be worth $141,032 (${{Inflation|US|0.141032|1901|r=2|fmt=c}} million today).

=== United States (1902–present) ===
[[File:HopeDiamondwithLighting2.JPG|thumb|The Hope Diamond with case lights turned on]]
Accounts vary about what happened to the diamond during the years 1902–1907; one account suggested that it lay in the William & Theodore safe during these years while the jewelers took it out periodically to show it to wealthy Americans; a rival account, probably invented to help add "mystery" to the Hope Diamond story, suggested that some persons had bought it but apparently sold it back to Frankel.<ref name=twsI44bb/> There were reports in one story in ''[[The New York Times]]'' of several owners of the gem, perhaps who had bought it from Frankel and owned it temporarily who met with ill-fortune,<ref>{{Cite web |title=History of the Hope Diamond |url=https://www.si.edu/spotlight/hope-diamond/history |access-date=2021-05-08 |website=Smithsonian Institution |language=en}}</ref> but this report conflicts with the more likely possibility that the gem remained in the hands of the Frankel jewelry firm during these years. Like many jewelry firms, the Frankel business ran into financial difficulties during the [[depression of 1907]] and referred to the gem as the "hoodoo diamond."<ref name=twsI44bb/><ref name="w679">{{cite news| title= The Relentless "Thaw Hoodoo"| work=Atlanta Georgian |location= Atlanta, Georgia| via=The Library of Congress | date=January 18, 1914 | url=https://www.loc.gov/resource/sn89053729/1914-01-18/ed-3/?sp=50& | access-date=December 20, 2024}}</ref>

In 1908, Frankel sold the diamond for $400,000 (${{Inflation|US|0.4|1908|r=2|fmt=c}} million today)<ref>Note: The $400,000 price may have been exaggerated, since a newspaper report in 1908 was that experts had thought it was inflated, and that the true price at that time may have been closer to the "air bidding price" of $250,000 (${{Inflation|US|0.25|1908|r=2|fmt=c}} million today); for further information see [https://query.nytimes.com/gst/abstract.html?res=F00D10FA3F5A17738DDDAF0894DD405B888CF1D3 NY Times article 1908] {{Webarchive|url=https://web.archive.org/web/20140327054836/http://query.nytimes.com/gst/abstract.html?res=F00D10FA3F5A17738DDDAF0894DD405B888CF1D3 |date=March 27, 2014 }}</ref> to a Salomon or Selim Habib, a wealthy Turkish diamond collector,<ref name=twsI43/> reportedly on behalf of Sultan [[Abdul Hamid II|Abdulhamid]] of the Ottoman Empire; however, on June 24, 1909, the stone was included in an auction of Habib's assets to settle his own debts,<ref name=twsI44fof/> and the auction catalog explicitly stated that the Hope Diamond was one of only two gems in the collection which had never been owned by the Sultan. A contrary report, however, suggested that Sultan Abdul Hamid did own the gem but ordered Habib to sell it when his throne "began to totter."<ref name=twsI44bb/> Habib reportedly sold the stone in Paris in 1909 for $80,000 (${{Inflation|US|0.08|1909|r=2|fmt=c}} million today).<ref name=twsI44bb/> The Parisian jewel merchant Simon Rosenau bought the Hope Diamond for 400,000 [[franc]]s and resold it in 1910 to [[Pierre Cartier (jeweler)|Pierre Cartier]] for 550,000 francs. In 1910, it was offered for $150,000 (${{Inflation|US|0.15|1910|r=2|fmt=c}} million today), according to one report.<ref name="twsI41">{{Cite news |date=October 30, 1910 |title=Hope Diamond Again Offered for Sale; Price Said to be Only $150,000, Though It Once Was Bought for $400,000. May Come to America Prospective Buyers Inspect it in London – Stone Has a Remarkable History |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F30C11F9345D16738DDDA90B94D8415B808DF1D3 |access-date=July 9, 2011}}</ref>

[[File:Edward Beale McLean and Evalyn Walsh.png|thumb|''[[Washington Post]]'' scion [[Edward Beale McLean]] and his wife, mining heiress [[Evalyn Walsh McLean]], in 1912. The couple owned the Hope Diamond for many years.]]
Pierre Cartier tried to sell the Hope Diamond to Washington, D.C., [[socialite]] [[Evalyn Walsh McLean]] and her husband in 1910.<ref name=twsI35/> Cartier was a consummate salesman who used an understated presentation to entice Mrs. McLean.<ref name=twsI44nnx/> He described the gem's illustrious history to her while keeping it concealed underneath special wrapping paper.<ref name=twsI44nnx/> The suspense worked: McLean became impatient to the point where she suddenly requested to see the stone. She recalled later that Cartier "held before our eyes the Hope Diamond."<ref name="twsI44nnx">{{Cite news |last=Evalyn Walsh McLean |date=July 9, 2011 |title=...the diamond's notorious past |publisher=PBS |url=https://www.pbs.org/treasuresoftheworld/a_nav/hope_nav/hnav_level_1/1_past_hopfrm.html |access-date=July 9, 2011 |archive-date=April 15, 2013 |archive-url=https://archive.today/20130415145105/http://www.pbs.org/treasuresoftheworld/a_nav/hope_nav/hnav_level_1/1_past_hopfrm.html |url-status=dead }}</ref> Nevertheless, she initially rejected the offer. Cartier had it reset. She found the stone much more appealing in this new modern style. There were conflicting reports about the sale in ''[[The New York Times]]''; one account suggested that the young McLean couple had agreed to purchase the diamond, but after having learned about its unfortunate supposed history, the couple had wanted to back out of the deal<ref name="twsI44gg">{{Cite news |date=March 12, 1911 |title=M'Leans Didn't Know Hope Diamond Tale; Wealthy Couple Unaware That the Famous Gem Had Brought Misfortune to Its Owners |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F10716F6385517738DDDAB0994DB405B818DF1D3 |access-date=July 9, 2011}}</ref> since they knew nothing of the "history of misfortunes that have beset its various owners."<ref name=twsI44gg/>
{{blockquote|Both Ned McLean and his pretty wife are quite young, and in a way unsophisticated, although they were born and reared in an atmosphere of wealth and luxury. All their lives they have known more of jewelry, finery, banquets, automobiles, horses, and other articles of pleasure than they have of books, with their wealth of knowledge.|report in ''The New York Times'', March 1911<ref name=twsI44gg/>}}

The brouhaha over the diamond's supposed "ill luck" prompted a worried editor of ''The Jewelers' Circular-Weekly'' to write:
{{blockquote|No mention of any ill luck having befallen Eliason, Hope, or any of their descendants was ever made. The Frankels surely were very prosperous while the stone was in their possession, as were the dealers who held it in Europe. Habib's misfortune referred to in the newspaper accounts occurred long after he had sold the stone... As Francis Hope never had the stone and May Yohe probably never saw it ... the newspaper accounts at the time mentioned were laughed at, but since then it has been the custom not only to revive these stories every time mention of the stone appears in the public press, but to add to them fictitious incidents of misfortune as to alleged possessors of the stone at various times.|T. Edgar Willson, in an editorial in ''The New York Times'', 1911<ref name=twsI44mm/>}}

The tenuous deal involved wrangling among attorneys for both Cartier and the McLeans, but finally, in 1911, the couple bought the gem for over $300,000 (over ${{Inflation|US|0.3|1911|r=1|fmt=c}} million today),<ref name="twsI44bb">{{Cite news |date=January 29, 1911 |title=J.R. M'Lean'sS Son Buys Hope Diamond; $300,000 for Jewel Owned by Louis XVI and Worn by Marie Antoinette and May Yohe |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F30813F63C5517738DDDA00A94D9405B818DF1D3 |access-date=July 9, 2011}}</ref> although there are differing estimates of the sales price at $150,000 and $180,000. An alternative scenario is that the McLeans may have fabricated concern about the supposed "curse" to generate publicity to increase the value of their investment.

A description was that the gemstone "lay on a bed of white silk and surrounded by many small white diamonds cut pear shaped".<ref name=twsI44bb/> The new setting was the current platinum framework surrounded by a row of sixteen diamonds which alternated between old mine cut and pear-shaped variants. Mrs. McLean wore it to a "brilliant reception" in February 1912 when it was reported that it was the first time it had been worn in public since it had "changed owners."<ref name="twsI44dd">{{Cite news |date=February 3, 1912 |title=Hope Diamond Worn at M'Lean Dinner; Famous Gem Seen for the First Time in Public Since It Changed Owners |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F00C17FB3C5813738DDDAA0894DA405B828DF1D3 |access-date=July 9, 2011}}</ref> She would "sport the diamond at social events"<ref name=twsI35/> and wore it to numerous social occasions that she had organized.
{{blockquote|The Hope Diamond in its original pendant must have looked fantastic at parties circa the 1920s, when it hung around the neck of owner Evalyn Walsh McLean's Great Dane, Mike.|report in ''[[The Wall Street Journal]]'', 2010<ref name="twsI42">{{Cite news |last=Nancy DeWolf Smith |date=November 19, 2010 |title=Searching Lennon's Psyche |work=The Wall Street Journal |url=https://www.wsj.com/articles/SB10001424052748704104104575622703876033526 |access-date=2011-07-09}}</ref>}}

There were reports that she misplaced it at parties,<ref>{{Cite news |last=Lyons, Leonard |date=May 1, 1947 |title=Mrs. MacLean's Fabulous Diamond Frequently Lost Like A Bauble |work=The Miami News |url=https://news.google.com/newspapers?id=bAgtAAAAIBAJ&pg=6186,229769&dq=stork+club |access-date=September 12, 2010}}{{Dead link|date=December 2021 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> deliberately and frequently, and then make a children's game out of "finding the Hope", and times when she hid the diamond somewhere on her estate during the "lavish parties she threw and invite guests to find it."<ref name=twsI35/> The stone prompted elaborate security precautions:

{{blockquote|William Schindele, a former Secret Service man, has been engaged to guard the stone. He in turn will be guarded by Leo Costello and Simeon Blake, private detectives. The stone will be kept at the McLean mansion during the day and each night will be deposited in a safe deposit vault. When Mrs. McLean wears the gem at balls and receptions arrangements have been made to keep the safe deposit building open until after the function that the stone may be safely stored away. A special automobile has been purchased to convey the guards to and from the house to the trust company's building.|report in ''[[The New York Times]]'', 1911<ref name=twsI44bb/>}}

But the stone was not stolen during their ownership. When Mrs. McLean died in 1947, she bequeathed the diamond to her grandchildren through a will which insisted that her former property would remain in the custody of [[trustee]]s until the eldest child had reached 25 years of age. This requirement would have prevented any sale for the next two decades. However, the trustees gained permission to sell her jewels to settle her debts, and in 1949 sold them to [[New York City|New York]] diamond merchant [[Harry Winston]]. He purchased McLean's "entire jewelry collection".<ref name=twsI35/> Over the next decade, Winston exhibited McLean's necklace in his "Court of Jewels," a tour of jewels around the United States,<ref name=twsI35/> as well as various promotional events and charity balls. The diamond appeared on the television quiz show ''[[The Name's the Same]]'', in an episode which first aired on August 16, 1955,<ref name="tws3JanW11">{{Cite news |date=August 16, 1955 |title=Clifton Fadiman (biography) |work=Hollywood Walk of Fame |url=https://hwof.com/star/radio/clifton-fadiman/1225?switcher=true |url-status=dead |access-date=January 23, 2013 |archive-url=https://web.archive.org/web/20151211043726/http://hwof.mobi/star/radio/clifton-fadiman/1225?switcher=true |archive-date=December 11, 2015 |df=mdy-all}}</ref> when a teenaged contestant with the actual name ''Hope Diamond'' was one of the mystery guests, as well as at the August 1958 [[Canadian National Exhibition]].<ref name=twsI34/> At some point, Winston also had the Hope Diamond's bottom [[facet]] slightly recut to increase its brilliance.

===Smithsonian ownership===
{{update section|cited content after 2010; a 2014 image in the article indicates a different setting and display after that date|date=August 2025}}
[[File:Hope Diamond US Mail parcel-1958.jpg|thumb|right|[[Registered mail|Registered Mail]] package used to deliver the Hope Diamond to the National Museum of Natural History.]]
[[File:HopeDiamondUnset.JPG|right|thumb|The Hope Diamond in November 2009, prior to being put in its new setting at the National Gem Collection.]]
[[File:hopediamondnewset.jpg|right|thumb|The Hope Diamond in the "Embracing Hope" setting, March 2011]]
Smithsonian [[mineralogist]] [[George Switzer (mineralogist)|George Switzer]] is credited with persuading jeweler Harry Winston to donate the Hope Diamond for a proposed national gem collection to be housed at the [[National Museum of Natural History]].<ref name="wp">{{Cite news |last=Holley |first=Joe |date=March 27, 2008 |title=George Switzer; Got Hope Diamond for Smithsonian |newspaper=[[The Washington Post]] |url=https://www.washingtonpost.com/wp-dyn/content/article/2008/03/26/AR2008032603029.html |access-date=April 13, 2008}}</ref> On November 10, 1958,<ref name=twsI44ll/> Winston acquiesced, sending it through [[United States Postal Service|U.S. Mail]] in a box wrapped in brown paper as simple [[registered mail]]<ref name=twsI35/> insured for $1 million at a cost of $145.29, of which $2.44 was for postage and the balance insurance.<ref name=twsI35/><ref>{{Cite web |date=June 29, 1909 |title=National Postal Museum |url=http://postalmuseum.si.edu/museum/1d_Hope_Diamond.html |url-status=dead |archive-url=https://web.archive.org/web/20130927203629/http://postalmuseum.si.edu/museum/1d_Hope_Diamond.html |archive-date=September 27, 2013 |access-date=April 16, 2014 |publisher=Postalmuseum.si.edu}}</ref> Upon its arrival it became Specimen #217868.<ref>{{Cite web |title=Harry Winston: The Man Who Gave Away The Gem |url=http://www.smithsonianchannel.com/site/smithsonian/hope_winston.html |url-status=dead |archive-url=https://web.archive.org/web/20090826234212/http://www.smithsonianchannel.com/site/smithsonian/hope_winston.html |archive-date=August 26, 2009 |access-date=August 24, 2009 |publisher=Smithsonian Institution |quote=The addition of Specimen #217868 to the collection of the Smithsonian's National Museum of Natural History (NMNH) is perhaps one of Winston's most laudable contributions to the American people.}}</ref>

Winston had never believed in any of the tales about the curse; he donated the diamond with the hope that it would help the United States "establish a gem collection."<ref name=twsI34/>

Winston died many years later, in 1978, of a heart attack. Winston's gift, according to Smithsonian curator Dr. Jeffrey Post, indeed helped spur additional gifts to the museum.<ref name="twsI44ee" />

For its first four decades in the [[National Museum of Natural History]], the Hope Diamond lay in its necklace inside a glass-fronted safe as part of the gems and jewelry gallery, except for a few brief excursions: a 1962 exhibition to the [[Louvre]];<ref name=twsI44fof/> the 1965 [[Rand Easter Show]] in Johannesburg, South Africa;<ref name=twsI44fof/> and two visits back to Harry Winston's premises in New York City, once in 1984,<ref name=twsI44fof/> and once for a 50th anniversary celebration in 1996.<ref name=twsI44fof/>

To guard against theft during the diamond's trip to the 1962 Louvre exhibition, Switzer traveled to Paris with the Hope Diamond tucked inside a velvet pouch sewn by his wife.<ref name="nytimes">{{Cite news |last=Hevesi |first=Dennis |date=April 6, 2008 |title=George Switzer, 92, Dies; Started a Gem Treasury |work=[[The New York Times]] |url=https://www.nytimes.com/2008/04/06/us/06SWITZER.html |access-date=April 9, 2008}}</ref> The Hope Diamond was placed into the pouch, which was pinned inside Switzer's pants pocket for the flight.<ref name="nytimes" />

When the Smithsonian's gallery was renovated in 1997, the necklace was moved onto a rotating pedestal inside a cylinder made of {{convert|3|in|mm|adj=on}} thick bulletproof glass in its own display room, adjacent to the main exhibit of the National Gem Collection, in the [[Janet Annenberg Hooker]] Hall of Geology, Gems, and Minerals. The Hope Diamond is the most popular jewel on display and the collection's centerpiece.<ref name="twsI37">{{Cite news |date=February 2, 1988 |title=Washington Talk: Briefing; New Smithsonian Gem |work=The New York Times |url=https://www.nytimes.com/1988/02/02/us/washington-talk-briefing-new-smithsonian-gem.html |access-date=July 9, 2011}}</ref>

In 1988, specialists with the [[Gemological Institute of America]] graded it and noticed "evidence of wear" and its "remarkably strong phosphorescence" with its clarity "slightly affected by a whitish graining which is common to blue diamonds."<ref name="twsI44fof" /> A highly sensitive [[Tristimulus colorimeter|colorimeter]] found tiny traces of a "very slight violet component" which is imperceptible to normal vision.<ref name="twsI44fof" />

In 2005, the Smithsonian published a year-long computer-aided geometry research which officially determined that the Hope Diamond is, in fact, cut from the stolen [[Tavernier Blue|French Blue]] crown jewel.<ref>{{Cite magazine |date=February 9, 2005 |title=Tech Solves Hope Diamond Mystery |url=http://archive.wired.com/science/discoveries/news/2005/02/66560 |magazine=[[Wired (magazine)|Wired]] |access-date=December 25, 2007}}</ref>

In 2009, the Smithsonian announced a temporary new setting for the jewel to celebrate a half-century at the [[National Museum of Natural History]]. Starting in September 2009 it was exhibited as a stand-alone gem with no setting. It had been removed from its setting for cleaning from time to time, but this was the first time it would be on public display by itself. Previously it had been shown in a platinum setting, surrounded by 16 white pear-shaped and cushion-cut diamonds, suspended from a chain containing forty-five diamonds.<ref name=":0" />

The Hope returned to its traditional setting in late 2010.<ref name=":0">{{Cite news |date=August 19, 2009 |title=Hope Diamond to get new setting for anniversary |work=[[USA Today]] |agency=Associated Press |url=https://www.usatoday.com/news/nation/2009-08-19-hope-diamond-setting_N.htm |access-date=January 15, 2011}}</ref>

On November 18, 2010, the Hope Diamond was unveiled and displayed at the Smithsonian in a temporary newly designed necklace called "Embracing Hope", created by the Harry Winston firm.<ref name="twsI35">{{Cite news |last=AFP |date=November 20, 2010 |title=Storied Hope Diamond gets a new necklace |publisher=France 24 |url=http://www.france24.com/en/20101120-storied-hope-diamond-gets-new-necklace |access-date=July 9, 2011}}{{dead link|date=April 2017}}</ref> Three designs for the new setting, all white diamonds and white metal, were created and the public voted on the final version.<ref>{{Cite web |last1=Magazine |first1=Smithsonian |last2=Righthand |first2=Jess |title=See the Hope Diamond in its New Setting, Unveiled Today at Natural History |url=https://www.smithsonianmag.com/smithsonian-institution/see-the-hope-diamond-in-its-new-setting-unveiled-today-at-natural-history-2603861/ |access-date=2022-01-19 |website=Smithsonian Magazine |language=en}}</ref>

The Hope Diamond also is resting on a new dark blue neck form,{{as of when|date=August 2025}} which the Harry Winston firm commissioned from display organization, Pac Team Group. Previously, the Hope Diamond had been displayed as a loose gem since late summer of 2009 when it was removed from its former Cartier-designed setting. A Smithsonian curator described it as "priceless" because it was "irreplaceable", although it was reported to be insured for $250 million.<ref name="twsI35" />

On January 13, 2012, the diamond was {{clarification needed span|text=returned to its historic setting,|reason=What "historic setting"?  The most recent image (in 2014) shows a gold metal setting not at all compatible with previous/"original" white diamond/white metal Museum displays|date=August 2025}} and the current necklace was implanted with another diamond worth "at least a million dollars". The necklace with the new diamond will be{{update inline|date=February 2024}} sold to benefit the Smithsonian.<ref name="twsI35" />

==Changes over time==
{| class="wikitable sortable"
|+ Changes over time
!Date acquired
!Owner
!Change in diamond
!Value when sold
!Notes
|-
|1653
|[[Jean-Baptiste Tavernier]]
|112.5 Old French karats, 116 metric carats
|220,000–720,000 livres. Tavernier received Patent of Nobility as part payment worth 450,000 livres
|<ref name=twsI35/><ref name=twsI44bb/> Acquired between 1640 and 1667, possibly 1653<ref name=Kurin1/>
|-
|1668<ref name="si.edu">{{Cite web |title=The Hope Diamond |url=https://www.si.edu/Encyclopedia_SI/nmnh/hope.htm |access-date=2020-03-19 |website=www.si.edu}}</ref>
|[[Louis XIV]] of France
|Triangular 69 metric-carat gem<ref name=twsI44ll/> set on a cravat-pin 1674.<ref name="Morel, p.166" />
|Bequeathed
|<ref name=twsI35/>
|-
|1715
|[[Louis XV]] of France
|Assembled into elaborate pendant ''Order of the Golden Fleece''<ref name=twsI44ll/>
|Bequeathed
|align="left"|
|-
|1775
|[[Louis XVI]] of France
|69 metric carats<ref name=twsI44mm/>
|Stolen
|align="left"|<ref name=twsI44bb/>
|-
|1791<ref name="si.edu" />
|Government of France
|
|Stolen
|<ref name=twsI44bb/>
|-
|1792
|Unknown
|
|Stolen
|
|-
|1812
|[[Daniel Eliason]], a London jeweler and receiver
|About 44 non-metric carats ({{convert|44|carat|g oz|adj=on}})
|$65,000; $90,000<ref name=twsI44jj/>
|
|-
|Between 1812 and 1830<ref name="si.edu" />
|[[George IV]] of the United Kingdom
|
|
|Sold to pay off king's debts after death
|-
|1830–1839
|Unknown
|
|
|
|-
|Sometime between 1830 and 1839
|Henry Phillip Hope (1774–1839)
|Became known as the "Hope Diamond"
|Bequeathed
|<ref name=twsI44bb/>
|-
|1839
|Henry Thomas Hope
|
|Bequeathed
|Displayed at the 1851 London Exhibition<ref name=twsI35/>
|-
|1861
|[[Henry Pelham-Clinton, 6th Duke of Newcastle-under-Lyne|Henry Pelham-Clinton, Duke of Newcastle]]
|
|Bequeathed
|Hope gave his daughter the gem after she married.<ref name=twsI44bb/>
|-
|1884
|[[Francis Pelham-Clinton-Hope, 8th Duke of Newcastle-under-Lyne|Lord Francis Hope, 8th Duke of Newcastle]]
|
|$250,000<ref name=twsI44ff/>
|<ref name=twsI44bb/><ref name=twsI44ff/>
|-
|1894
|[[May Yohé]], Lady Henry Francis Hope
|
|£29,000 (£{{formatnum:{{Inflation|UK|29000|1908|2011|r=-1}}}} {{as of|2011|lc=y}})
|<ref name=twsI44bb/> May Yohé was the wife of Lord Henry Francis Hope
|-
|1901
|Adolph Weil, London jewel merchant
|
|$141,032 (approximately £28,206). Second est: $148,000<ref name=twsI44bb/>
|
|-
|align="left"|1901
|align="left"|Simon Frankel
|align="left"|
|align="left"|
|align="left"|
|-
|align="left"|1908
|align="left"|Selim Habib (Salomon? Habib)
|align="left"|
|align="left"|
|align="left"|
|-
|1908
|Sultan [[Abdul Hamid II|Abdul Hamid]]
|44 3/8 carats ({{convert|44.375|carat|g oz|adj=on}})<ref name=twsI44jj/>
|400,000 francs; second estimate: $80,000.<ref name=twsI44bb/>
|Disputed whether Sultan owned it<ref name="twsI44jj" />
|-
|1909
|Simon Rosenau
|
|550,000 francs
|
|-
|1910
|[[Pierre Cartier (jeweler)|Pierre Cartier]]
|Reset to appeal to Evalyn McLean; diamond mounted as a headpiece on three-tiered circlet of large white diamonds; became pendant
|$150K; $300K+; $185K
|Conflicting estimates of sale price
|-
|1911
|[[Edward Beale McLean]] and [[Evalyn Walsh McLean]]
|Weight thought to be 44.5 carats ({{convert|44.5|carat|g oz|adj=on}})
|$180,000
|<ref name=twsI34/><ref name=twsI35/> Entire McLean collection sold to Winston
|-
|1947
|[[Harry Winston]]
|Diamond's bottom [[facet]] slightly recut to increase brilliance
|
|NYC jeweler; he took it around the US to popularize it<ref name=twsI34/>
|-
|1958
|[[Smithsonian Institution]]
|Settings, mountings, scientific study; weight found to be 45.52 metric carats in 1974
|$200–$250 million (if sold in 2011)
|Insured for $250 million<ref name=twsI34/><ref name=twsI35/>
|}

==Curse mythology==
{{More citations needed|section|date=January 2022}}

===Superstitions, publicity, marketing===
[[File:HopeDiamond.JPG|right|thumb|The Hope Diamond in the National Gem Collection in its original setting.]]
[[File:Hope Diamond from rear.jpg|thumb|Spectators gazing at the Hope Diamond seen from the rear in its case at the National Gem Collection of the Smithsonian Institution.]]
The diamond has been surrounded by a [[mythology]] of a reputed "curse" to the effect that it brings misfortune and tragedy to anyone who owns it or wears it, but there are strong indications that such fabrications enhance the stone's mystery and appeal, since increased publicity usually raised the gem's value and newsworthiness.<ref name="twsNPR12">{{Cite web |last=All Things Considered |date=May 23, 2012 |title=A New Look For The Hope Diamond |url=https://www.npr.org/templates/story/story.php?storyId=112116481 |access-date=March 28, 2016 |publisher=NPR |quote=...But Post says the tales of misery and mayhem just aren't true. ...Pierre Cartier, if he didn't completely make up the story, certainly embellished the story to get her interested...}}</ref><ref name="twsWashPost45">{{Cite news |last=Sarah Booth Conroy |date=September 29, 1997 |title=Hope & Despair: The 'Curse' of The Diamond |newspaper=Washington Post |url=https://www.washingtonpost.com/archive/lifestyle/1997/09/29/hope-despair-the-curse-of-the-diamond/4775e88a-7423-4655-bd52-76890b9c2f94/ |access-date=March 28, 2016 |quote=...curse of the Hope Diamond was first given credence by Paris jeweler Pierre Cartier—or so the story goes—to entice Washingtonian Evalyn Walsh McLean into buying ...Legends whirl around it...}}</ref><ref name="twsLiveScienceXY">{{Cite web |last=Benjamin Radford |date=April 30, 2014 |title=Mystery of the Hope Diamond Curse |url=https://www.livescience.com/45239-hope-diamond-curse.html |access-date=March 28, 2016 |publisher=Live Science |quote=...}}</ref>

According to many specious accounts in the late nineteenth and early twentieth century, the original form of the Hope Diamond was stolen from an eye of a sculpted statue of the [[Hindu goddess]] [[Sita]]. However, much like the "[[Curse of the Pharaohs#Tutankhamun's "curse"|curse of Tutankhamun]]", this general type of "legend" was most likely the independent creation of Western authors during the Victorian era,<ref>Keys, David. "[https://web.archive.org/web/20090423142118/http://www.independent.co.uk/news/uk/home-news/curse-of-the-mummys-tomb-invented-by-victorian-writers-626787.html Curse of the mummy's tomb invented by Victorian writers]". ''[[The Independent]]''. December 31, 2000.</ref> and the specific legends about the Hope Diamond's "cursed origin" were invented in the early 20th century to add mystique to the stone and increase its sales appeal as well as increase newspaper sales.{{citation needed|date=November 2021}}

It fueled speculation that persons possessing the gemstone were fated to have bad luck with varying reports of undetermined veracity. A report in 2006 in ''[[The New York Times]]'', however, suggested that "any hard evidence linking it to tragedy has yet to be officially proven".<ref name="twsI36">{{Cite news |last=Jason Buchanan |date=2011 |title=Ancient Mysteries: Curse of the Hope Diamond (2006) (Title: Ancient Mysteries: Curse of the Hope Diamond – Running Time: 50 Minutes) |work=[[The New York Times]] |department=Movies & TV Dept. |url=https://movies.nytimes.com/movie/340355/Ancient-Mysteries-Curse-of-the-Hope-Diamond/overview |url-status=dead |access-date=July 9, 2011 |archive-url=https://web.archive.org/web/20111119053656/http://movies.nytimes.com/movie/340355/Ancient-Mysteries-Curse-of-the-Hope-Diamond/overview |archive-date=November 19, 2011}}</ref>

There is evidence of several newspaper accounts which helped spread the "curse" story.<ref name="twsLiveScienceXY" /> A [[New Zealand]] newspaper article in 1888 described the supposedly lurid history of the Hope Diamond, including a claim that it was "said once to have formed the single eye of a great idol", as part of a confused description that also claimed that its namesake owner had personally "brought it from India", and that the diamond's true color was "white, [although] when held to the light, it emits the most superb and dazzling blue rays".<ref>{{Cite web |title=Papers Past – Hawke's Bay Herald – 25 April 1888 – Two Famous Diamonds |url=http://paperspast.natlib.govt.nz/cgi-bin/paperspast?a=d&d=HBH18880425.2.17 |access-date=October 11, 2010 |publisher=Paperspast.natlib.govt.nz}}</ref>

An article entitled "Hope Diamond Has Brought Trouble To All Who Have Owned It" appeared in ''[[The Washington Post]]'' in 1908.<ref>Richard Kurin, ''Hope Diamond: The Legendary History of a Cursed Gem'' (HarperCollins, 2006), p. 364; the article, drawn from the ''New York Herald'' and appeared on page 4 of the ''Post''s "Miscellany section"; the caption for the illustration was "Remarkable Jewel a Hoodoo".</ref> In 1909 upon reporting on the sale of the Hope Diamond [[The Times]] also gave an account of its history, noting "its possession is the story of a long series of tragedies - murder, suicide, madness, and various other misfortunes."<ref>{{Cite book |last=Luckhurst |first=Roger |url=https://books.google.com/books?id=ybcMjWQwWOIC&q=%22sale+of+the+hope+diamond%22&pg=PA22 |title=The Mummy's Curse: The true history of a dark fantasy |date=2012 |publisher=OUP Oxford |isbn=978-0-19-164098-8 |pages=22 |language=en}}</ref><ref>{{Cite news |date=June 25, 1909 |title=Sale of the Hope Diamond. |pages=5 |work=The Times |issue=38995 |publication-place=London, England}}</ref>

These were followed by another ''New York Times'' article in 1911<ref name="twsI44bb" /> which gave a list of supposed cases of ill-fortune, but with few confirmations from other sources:
* Jacques Colet bought the Hope Diamond from Simon Frankel and committed suicide.
* Prince Ivan Kanitovski bought it from Colet but was killed by Russian revolutionaries.
* Kanitovski loaned it to Mlle Ladue who was "murdered by her sweetheart".
* Simon Mencharides, who had once sold it to the Turkish sultan, was thrown from a precipice along with his wife and young child.
* Sultan Hamid gave it to Abu Sabir to "polish" but later Sabir was imprisoned and tortured.
* Stone guardian Kulub Bey was hanged by a mob in Turkey.
* A Turkish attendant named Hehver Agha was hanged for having it in his possession.
* Tavernier, who brought the stone from [[India]] to Paris was "torn to pieces by wild dogs in Constantinople".
* King Louis XIV gave it to [[Madame de Montespan]] whom later he abandoned.
* [[Nicolas Fouquet]], an "Intendant of France", borrowed it temporarily to wear it but was "disgraced and died in prison".
* A temporary wearer, [[Marie Thérèse Louise of Savoy, Princesse de Lamballe|Princess de Lamballe]], was "torn to pieces by a French mob".
* Jeweler William Fals who recut the stone "died a ruined man".
* William Fals' son Hendrik stole the jewel from his father and later died by [[suicide]].
* Some years (after Hendrik) "it was sold to Francis Deaulieu, who died in misery and want".

The mainstream view is that these accounts are specious and speculative since there are few, if any, independent confirmations to back them up.<ref name="twsLiveScienceXY" /> A few months later, perhaps compounded by inaccurate reports in ''[[The New York Times]]'' on November 17, 1909, it was incorrectly reported that the diamond's former owner, Selim Habib, had drowned in a shipwreck of the steamer ''Seyne'' near Singapore;<ref name="twsI43">{{Cite news |date=November 17, 1909 |title=Hope Diamond's Owner Lost; Famous Unlucky Stone also Said to Have Gone Down with the Seyne |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F70B15FB3D5412738DDDAE0994D9415B898CF1D3 |access-date=July 9, 2011}}</ref> in fact, it was a different person with the same name, not the owner of the diamond.<ref name="twsSmithsonian1">{{Cite magazine |title=The Misfortunes of Selim Habib |url=http://mineralsciences.si.edu/collections/hope/details/the-misfortunes-of-selim-habib.htm |magazine=Smithsonian |access-date=March 28, 2016 |quote=...on November 17, 1909, the New York Times reported that Habib had been killed in a shipwreck ... This report was wildly inaccurate. Neither Habib nor the Hope Diamond were on the steamer when it sank (although another man named Selim Habib did apparently drown in the shipwreck)...}}</ref> There was speculation that jeweler [[Pierre Cartier (jeweler)|Pierre Cartier]] further embroidered the lurid tales to intrigue Evalyn Walsh McLean into buying the Hope Diamond in 1911.<ref name="twsNPR12" />

The theme of greedy robbers stealing a valuable object from the tomb or shrine of an ancient god or ruler, and then being punished by it, is one which repeats in many different forms of literature. A likely source of inspiration for the fabrications was the [[Wilkie Collins]]' 1868 novel, ''[[The Moonstone]]'', which created a coherent narrative from vague and largely disregarded legends which had been attached to other diamonds such as the [[Koh-i-Noor]] and the [[Orloff diamond]]. The theme can be seen in stories about the curse of Egyptian king [[Tutankhamun]] and in films such as those of the ''[[Indiana Jones]]'' and ''[[The Mummy (franchise)|The Mummy]]'' franchises. In keeping with these scripts, according to the legend, Tavernier did not buy the Hope diamond but stole it from a [[Hindu]] temple where it had been set as one of two matching eyes of an idol, and the temple priests then laid a curse on whoever might possess the missing stone. Largely because the other blue diamond "eye" never surfaced, historians dismissed the fantastical story.<ref name="twsLiveScienceXY" />

The stories generally do not bear up to more pointed examination; for example, the legend that Tavernier's body was "torn apart by wolves"<ref name="twsI44bb" /> is inconsistent with historical evidence which shows that he lived to 84 and died of natural causes.{{citation needed|date=November 2021}}

It is possible that the overblown story of the "curse", possibly fueled by Cartier and others, may have caused some hesitation on the part of the prospective buyers, the McLeans, around 1911. When a lawsuit between buyer and seller erupted about the terms of the deal, newspapers kept alive reports of the diamond's "malevolent influence" with reports like this one, which blamed the stone's "curse" on having caused, of all things, the lawsuit itself:

{{blockquote|The malevolent influence that has for centuries dogged with discord and disaster the owners of the famous Hope diamond has started again and without waste of time, despite special precautions against ill-luck taken at the time of its last sale, according to John S. Wise, Jr., of 20 Broad Street, attorney for Cartiers, the Fifth Avenue jewelers, who are suing Mr. and Mrs. Edward B. McLean for $180,000, its alleged purchase price.|report in ''[[The New York Times]]'', March 1911<ref name="twsI44cc">{{Cite news |date=March 10, 1911 |title=Says M'Lean Drank Hope Diamond Toast; The Purchaser's Health Pledged, Jewelers' Lawyer Avers, When Famous Stone Was Delivered |work=The New York Times |url=https://query.nytimes.com/gst/abstract.html?res=F30C12FF3F5517738DDDA90994DB405B818DF1D3 |access-date=2011-07-09}}</ref>}}

The Hope Diamond was also blamed for the unhappy fates of other historical figures vaguely linked to its ownership, such as the falls of Madame [[Athenais de Montespan]] and French finance minister, [[Nicolas Fouquet]], during the reign of [[Louis XIV]]; the beheadings of [[Louis XVI]] and [[Marie Antoinette]] and the rape and mutilation of the [[Marie-Louise, princesse de Lamballe|Princesse de Lamballe]] during the [[French Revolution]]; and the forced abdication of Turkish Sultan [[Abdul Hamid II]] who had supposedly killed various members of his court for the stone (despite the annotation in Habib's auction catalog).<ref name=twsI44bb/> Even jewelers who may have handled the Hope Diamond were not spared from its reputed malice: the insanity and suicide of Jacques Colot, who supposedly bought it from Eliason, and the financial ruin of the jeweler Simon Frankel, who bought it from the Hope family, were linked to the stone.<ref name=twsI44bb/> But although he is documented as a French diamond dealer of the correct era, Colot has no recorded connection with the stone, and Frankel's misfortunes were in the midst of economic straits that also ruined many of his peers.{{citation needed|date=November 2021}}

The legend includes deaths of numerous other characters who had been previously unknown: Diamond cutter Wilhelm Fals, killed by his son Hendrik, who stole it and later committed suicide; Francois Beaulieu, who received the stone from Hendrik but starved to death after selling it to Eliason; a Russian prince named Kanitowski, who lent it to French actress Lorens Ladue and promptly shot her dead on the stage, and was himself stabbed to death by revolutionaries; Simon Montharides, hurled over a precipice with his family.<ref name="twsI44bb" /> However, the existence of only a few of these characters has been verified historically, leading researchers to conclude that most of these persons are fictitious.{{citation needed|date=March 2016}}

The actress May Yohe made repeated attempts to capitalize on her identity as the former wife of the last Hope to own the diamond, and sometimes blamed the gemstone for her misfortunes. In July 1902, months after Lord Francis divorced her, she told police in [[Australia]] that her lover, Putnam Strong, had abandoned her and taken her jewels. In fact, the couple reconciled, married later that year, but divorced in 1910. On her third marriage in 1920, she persuaded film producer George Kleine to back a 15-episode serial ''[[The Hope Diamond Mystery]]'', which added fictitious characters to the tale, but the project was not successful. In 1921, she hired Henry Leyford Gates to help her write ''The Mystery of the Hope Diamond,'' in which she starred as Lady Francis Hope. The film added more characters, including a fictionalized Tavernier, and added [[Jean-Paul Marat|Marat]] among the diamond's "victims". She also wore her copy of the Hope, trying to generate more publicity to further her career.{{citation needed|date=November 2021}}

Evalyn Walsh McLean added her own narrative to the story behind the blue jewel, including that one of the owners had been [[Catherine the Great]], although there are no confirmations that the Russian ruler ever owned the diamond. McLean would bring the Diamond out for friends to try on, including [[Warren G. Harding]] and [[Florence Harding]].{{citation needed|date=November 2021}}

Since the Smithsonian acquired the gemstone, the "curse appears to have gone dormant."<ref name=twsI35/> Owning the diamond has brought "nothing but good luck" for the nonprofit national museum, according to a Smithsonian curator, and has helped it build a "world-class gem collection" with rising attendance levels.<ref name=twsI44ee/>

===Owners and their fates===
{| class="wikitable sortable"
|+ What happened to owners and wearers of the gem
!Date<br>acquired
!Owner
!Fate
!Notes
|-
|1653
|[[Jean-Baptiste Tavernier]]
|Lived 1605–1689; died age 84
|<ref name=twsI35/><ref name=twsI44bb/> Acquired between 1640 and 1667, possibly 1653<ref name=Kurin1/>
|-
|1668
|[[Louis XIV]]
|Long prosperous reign; lived 1638–1715, died age 76
|<ref name=twsI35/>
|-
|1722
||[[Louis XV]]
|Lived 1710–1774, died age 64
|
|-
|1775
|[[Louis XVI]]
|Guillotined in 1793, age 38
|<ref name=twsI44bb/>
|-
|1775
|[[Marie Antoinette]]
|Guillotined 1793, age 37
|<ref name=twsI44bb/> Wife of Louis XVI
|-
|1792<ref name=twsI44bb/>
|
|
|<ref name=twsI44bb/>
|-
|1805?
|[[George IV]]
|Lived 1762–1830, died age 67
|Doubtful whether he ever owned it<ref name=twsI35/>
|-
|1812
|[[Daniel Eliason]], a London jeweler
|Died 17 November 1824, aged 71<ref>{{Cite news |last=<!--Staff writer(s); no by-line.--> |date=22 November 1824 |title=Died |work=Evening Mail |location=England |url=https://www.britishnewspaperarchive.co.uk/viewer/bl/0001316/18241122/016/0004 |url-access=subscription |access-date=14 October 2022 |via=British Newspaper Archive}}</ref>
|<ref name=twsI44bb/>
|-
|1830
|[[Thomas Hope (1769–1831)|Thomas Hope]]
|Lived 1769–1831, died age 62
|<ref name=twsI44bb/>
|-
|1839
|Henry Philip Hope
|
|<ref name=twsI35/>
|-
|1861
|align="left"|[[Henry Pelham-Clinton, 6th Duke of Newcastle-under-Lyne|Henry Pelham-Clinton, 6th Duke of Newcastle]]
|Lived 1834–1879, died age 45
|<ref name=twsI44bb/>
|-
|1884
|[[Francis Pelham-Clinton-Hope, 8th Duke of Newcastle-under-Lyne|Lord Francis Hope]]
|Bankruptcy; forced to sell it; lived 1866–1941 died age 75
|<ref name=twsI44bb/><ref name=twsI44ff/>
|-
|1894
|[[May Yohé]]
|Musical actress, divorced, remarried several times, died poor, age 72
|<ref name=twsI44bb/> Wife of Lord Francis Hope
|-
|1901
|Adolph Weil, London jewel merchant
|
|
|-
|1901
|Simon Frankel
|
|
|-
|1908
|Selim Habib (Salomon? Habib)
|
|Possibly as agent for Turkish Sultan Hamid
|-
|1908
|Sultan [[Abdul Hamid II]] of Turkey
|Deposed 1909; died 1918, age 75
|Disputed whether the Sultan ever owned it
|-
|1909
|Simon Rosenau
|
|
|-
|1910
|[[Pierre Cartier (jeweler)|Pierre Cartier]]
|Lived 1878–1964, died age 86
|
|-
|1911
|[[Edward Beale McLean]] and<br>[[Evalyn Walsh McLean]]
|Couple divorced 1932;<br>Edward had mental illness and died aged 51 or 52;<br>Evalyn died aged 60 from pneumonia in 1947
|<ref name=twsI34/><ref name=twsI35/>
|-
|1947
|[[Harry Winston]]
|Lived 1896–1978, died age 83
|Jeweler who gave it to Smithsonian 1958<ref name=twsI34/>
|-
|1958
|[[Smithsonian Institution]]
|Prospered, attendance up
|<ref name=twsI34/><ref name=twsI35/>
|}

==Replicas==
{{More citations needed|section|date=January 2022}}
In 2007,<ref name="Farges et al., 2009"/> a lead cast of the French Blue diamond was discovered in the gemological collections of the [[Muséum national d'histoire naturelle|National Museum of Natural History]] in [[Paris, France|Paris]].<ref>{{Cite web |title=Redécouverte d'une rélique historique |url=http://foifoif.free.fr/41AE1384-2E13-4BB9-93CB-4202C2C16DAC_files/presse.pdf |url-status=dead |archive-url=https://web.archive.org/web/20110720221321/http://foifoif.free.fr/41AE1384-2E13-4BB9-93CB-4202C2C16DAC_files/presse.pdf |archive-date=July 20, 2011 |access-date=2020-03-19}}</ref> This triggered an investigation by an international team of researchers into the stone's history, which previously had to rely on [[two-dimensional]] sketches of the diamond. The [[Three-dimensional space|three-dimensional]] structure allowed researchers to apply techniques such as [[Computer-aided design|computer-aided drawing]] analysis.{{citation needed|date=November 2021}}

The methods for digitally-reconstructing the gem are reviewed in this article's "Theft and Disappearance" section. The emblem of the Golden Fleece of Louis XV was reconstructed around the French Blue, including the "Côte de Bretagne" [[spinel]] of {{convert|107|carat|g oz}}, the "Bazu" diamond of {{convert|32.62|carat|g oz}}, 3 oriental topazes (yellow sapphires), five [[brilliant (diamond cut)|brilliant]]s of up to {{convert|5|carat|mg oz}} and nearly 300 smaller diamonds.{{citation needed|date=November 2021}}

As part of the investigation, the "Tavernier Blue" diamond was reconstructed from the original French edition of Tavernier's ''Voyages'' (rather than the later London edition, which had distorted and modified Tavernier's original figures). The Smithsonian Institution provided [[Ray tracing (physics)|ray-tracing]] and [[optical spectroscopy|optical spectroscopic]] data about the Hope diamond.{{citation needed|date=November 2021}}

The lead cast had been catalogued at the French museum in 1850 and was provided by a prominent Parisian jeweler named Charles Archard who lived during the same generation as [[René Just Haüy]], who died in 1822. Most likely, the lead cast was made near 1815, because that was the year that similar entries from the 1850 catalogue had been made. The model was accompanied by a label stating that the ''French Blue'' was in the possession of a person known as "Mr. Hope of London". Other archives at the Muséum suggests that Hope was a customer of Achard for many years, particularly for blue gems.<ref name="ReferenceA">Farges et al.  ''Revue de Gemmologie'' 165, 17–24.</ref>

These findings have helped investigators piece together what may have happened during the rock's anonymous years during the several decades following 1792. According to one line of reasoning, the first "Hope" to have the "Hope Diamond"—Henry Phillip Hope—might have possessed the ''French Blue'' that he had acquired some time after the 1792 robbery in Paris, perhaps around 1794–1795, when the Hopes were believed to have left Holland for London to escape Napoleon's armies.<ref name="Buist, M.G. 1974"/> At about the same time, Cadet Guillot, who may have been one of the thieves to have stolen the ''Golden Fleece'', arrived in London.<ref>Bapst G. (1889) Les joyaux de la Couronne. Hachette.</ref> This places Mr. Hope and Mr. Guillot in London at the same time. According to a late nineteenth century historian named Bapts, a contract was made between Cadet Guillot and a French aristocrat named Lancry de la Loyelle, in 1796, to sell the {{convert|107|carat|g oz|adj=on}} [[spinel]]-dragon of the Golden Fleece. According to this line of reasoning, in 1802 Hope sold his assets, and the continental blockade by Napoleon led the Hope's bank into a serious financial crisis by 1808, and the crisis peaked during the winter of 1811–1812<ref>Balfour, Famous diamonds. Antique Collectors' Club Ltd; 6th Revised edition (Dec. 2009)</ref> This put Mr. Hope in a financial bind. There is a possibility that, given his financial predicament, Hope pawned the ''French Blue'' to jewel merchant Eliason to get much-needed cash when the British currency, [[Pound sterling|sterling]], was highly depreciated.<ref name="Buist, M.G. 1974">Buist, M.G. (1974) At spes non fracta: Hope & Co. 1770–1815. Merchant bankers and diplomats at work. Den Haag, Martinus Nijhoff.</ref> This is consistent with the entry in Eliason's records about having the stone in 1812.{{citation needed|date=November 2021}}

However, the diamond's owners may have felt pressure to recut the stone quickly to disguise its identity, since if the French government had learned of its existence, it may have sued the owners for repossession.<ref name="ReferenceA" /> Regardless of whether Mr. Hope had lost possession or kept it during these years, by 1824 it was again in his possession. It was around this time that Eliason died; Hope's financial situation had been restored thanks to efforts by the Barings, who saved the Hope bank in the difficult financial years of 1812–1820.<ref name="Buist, M.G. 1974" /> Accordingly, if this is correct, then the lead cast of the ''French Blue'' and the "Hope" diamond are likely to have been created in the same workshop, possibly in London, and probably a little before 1812.{{citation needed|date=November 2021}}

The lead cast had important ramifications since it gave enough information to curators at the French museum to commission the first exact replicas of both the Tavernier and French Blue diamonds using a material which simulates diamonds called [[cubic zirconia]], with the help of artisans who work with gems ([[lapidary|lapidaries]]), led by Scott Sucher. These replicas have been completed and displayed with the [[French Crown Jewels]] and the [[Great Sapphire of Louis XIV]], a Moghul-cut sapphire of {{convert|135.7|carat|g oz}}. Artisans recreated the elaborate [[parure]] of different-colored gems known as the ''Golden Fleece of King Louis XV of France'', which is arguably the most fabulous work in the history of French jewelry; this happened from 2007 to 2010. The original parure, created in 1749 by royal jeweler Pierre-André Jacquemin, was stolen and broken in 1792. The reassembled jewel contained the French Blue and the Bazu diamonds, as well as the Côte de Bretagne spinel and hundreds of smaller diamonds. Three years of work were needed to recreate this jewel, and it required exacting and precise skill which revealed not only the skill of today's lapidaries, but the skill of its original eighteenth-century designers. The reconstructed jewel was presented by Herbert Horovitz, with {{Interlanguage link|François Farges|fr}} of the French museum in attendance, at the former Royal Storehouse in Paris on June 30, 2010, which was the same site where the original had been stolen 218 years before.{{citation needed|date=November 2021}}

Additional recreations were made possible by new discoveries. A previously unknown drawing of the Golden Fleece was rediscovered in [[Switzerland]] in the 1980s, and two blue diamonds that had ornamented the jewel were found as well, and these recent findings enabled artisans to recreate a copy of the ''emblem''.<ref>(Farges et al., 2008)</ref> It led to the construction, using cubic zirconia, of a piece that almost exactly resembles<ref name="Farges et al., 2009">Farges et al., 2009</ref> the mythic ''French Blue'' {{convert|69|carat|g oz}} masterpiece.{{citation needed|date=November 2021}}

The emblem has another great blue diamond, which was later named "the Bazu" in reference to a dealer who reportedly had sold it to Louis XIV in 1669.<ref>(Morel, 1988)</ref> This Bazu diamond was recut in 1749 as a baroque cushion weighing {{convert|32.62|carat|g oz}}. The 1791 inventory mentioned that the Bazu was "light sky blue",<ref>("''d'une eau un peu céleste''"; Bion et al., 1791)</ref> which is consistent with the fact that the Golden Fleece of the Color Adornment was made of a variety of great colored gems. Based on documents kept in a private collection,<ref name="Farges et al., 2008">Farges et al., 2008</ref> it could be shown that this particular diamond was not hexagonal-shaped, as some historians had previously thought,<ref>Bapst, 1889; Morel, 1988; Tillander, 1995</ref> but was in a shape best described as "rounded squared",<ref>according to the 1774 and 1791 inventories</ref> similar to the so-called [[Regent Diamond|Régent diamond]].<ref name="Farges et al., 2009" /> There is a report that a curator from the [[Muséum national d'histoire naturelle|French museum]] will assert that the hexagonal cut from the Bazu is inconsistent historically and gemologically.{{Citation needed|date=March 2011}} The Bazu stone referred to another version of Louis XV's great Golden Fleece, made out of blue sapphires instead of blue diamonds.<ref name="Farges et al., 2008" /> According to one view, this version appears to have never been manufactured but only suggested to the king as an alternative to the effective final version, bearing two blue diamonds. Nevertheless, replicas of both blue diamonds were cut by Scott Sucher using cubic zirconia, one being colored deep blue and the other light blue.{{citation needed|date=November 2021}}

The emblem had a third great gem known as ''The Côte de Bretagne dragon''. Its replica was based on a wax likeness sculpted by Pascal Monney, who had based his recreation from three-dimensional scaled pictures of the original object which had been made by French artist François Farges; Farges, in turn, had seen the original objects displayed at the [[Musée du Louvre|Louvre]]'s [[Galerie d'Apollon]]. In addition, artist Etienne Leperlier cast a "crystal" lead glass duplicate of the wax replica of the carved Côte de Bretagne. Its pigmentation is made out of [[gold]] and manganese pigments to simulate as close as possible the original color of the [[spinel]].{{citation needed|date=November 2021}}

The 500-plus remaining replicas of diamonds were cut from cubic zirconia using a baroque cushion cut. Colors were used to recall the original artwork: red for the flames, and yellow for the fleece, and in keeping with the original work, the materials used were initially colorless but were painted in the same fashion used by the artist Jacquemin when the original Golden Fleece was completed in 1749. Since the original was most likely made out of gold plated with silver, a choice was made to use a [[:wikt:matrix|matrix]] mostly made out of 925-grade silver to keep costs under control without compromising quality. A number of different artists helped with this project:
* The silver matrix was carved by Jean Minassian of [[Geneva, Switzerland|Geneva]] who used historical drawings of the delicate three-dimensional elements of the dragon's wings and tail as well as the palms around which the dragon is suspended.
* Casts were made by Andreas Altmann. This will allow even more copies to be made in the future.
* Amico Bifulci gilded parts of the matrix to recreate the elegant original gold and silver arrangement of the original.{{citation needed|date=November 2021}}

All stones were set according to 18th-century techniques. Finally, a luxury box containing the Golden Fleece was recreated by Frédéric Viollet using crimson-colored Moroccan leather.<ref>"maroquin cramoisi"</ref> The box was gilded by Didier Montecot to the arms of Louis XV, using the king's original iron stamp made by the Simier house.<ref>the official bookbinders of the kings of France</ref> A dark red [[Crimson|cramoisi]] ribbon, made of crimson satin moire, holds the jewel inside the box.{{citation needed|date=November 2021}}

<gallery widths="200px" heights="200px">
File:PlombDBC.jpg|Lead cast of the "French Blue" diamond, discovered in 2007 at the [[National Museum of Natural History (France)]] by Farges (ca. {{convert|31|x|26|mm|abbr=on}}).
File:Diamantbleu.gif|Computer reconstruction of the "French Blue" diamond, as cut by Jean Pitau for [[Louis XIV]] in 1673 (ca. {{convert|31|x|25|mm|abbr=on}}).
File:Presentation.png|The recreated great Golden Fleece of [[Louis XV]], presented by H. Horovitz (left) and {{Interlanguage link|François Farges|fr}} (right) at the Hôtel de la Marine, formerly the royal Storehouse in Paris, on June 30, 2010.
File:Toison2010.png|Detailed view of the recreated great Golden Fleece of king Louis XV of France. Below the {{convert|107|carat|g oz}} spinel Côte de Bretagne hangs the French Blue diamond and the fleece itself, set with hundreds of yellow diamond replicas.
</gallery>

==See also==
{{Portal|Minerals}}
* [[Crown Jewels of the United Kingdom]]
* [[List of diamonds]]
* [[National Museum of Natural History]]

== Explanatory notes ==
{{notelist}}

==References==
{{Reflist|30em}}

==Further reading==
* François Farges, Scott Sucher, Herbert Horovitz and Jean-Marc Fourcault (September 2008), ''Revue de Gemmologie'', vol. 165, pp.&nbsp;17–24 (in French) (English version 2009 in ''[[Gems & Gemology]]'')
* Marian Fowler, ''Hope: Adventures of a Diamond'', Ballantine (March 2002), hardcover, {{ISBN|0-345-44486-8}}.
* Stephen C. Hofer, ''Collecting and Classifying Coloured Diamonds'', Ashland Press 1998, {{ISBN|0-9659410-1-9}}.
* Janet Hubbard-Brown, ''The Curse of the Hope Diamond (History Mystery)'', Harpercollins Children's Books (October 1991), trade paperback, {{ISBN|0-380-76222-6}}.
* Richard Kurin, ''Hope Diamond: The Legendary History of a Cursed Gem'', New York: HarperCollins Publishers & Smithsonian Press, 2006. hardcover, {{ISBN|0-06-087351-5}}.
* Robert C. Marley. Inspector Swanson und der Fluch des Hope-Diamanten. Dryas, Frankfurt a. M., Germany 2014, {{ISBN|3940855537}}
* [[Susanne Steinem Patch]], ''Blue Mystery: The Story of the Hope Diamond'', Random House (April 1999), trade paperback, {{ISBN|0-8109-2797-7}}
* Shipley, Robert M. & A. McC. Beckley (July–August 1935). ''Famous Diamonds of the World'', pp.&nbsp;5–8. [[Gemological Institute of America]], Vol. 1, No. 10
* Edwin Streeter, ''The Great Diamonds of the World'', George Bell & Sons, (1882), hardcover, {{OCLC|977677942}}
* Richard W. Wise, ''Secrets of the Gem Trade: The Connoisseur's Guide to Precious Gemstones'', Brunswick House Press (2003) {{ISBN|0-9728223-8-0}}
* Richard W. Wise, ''The French Blue'', Brunswick House Press, (2010) {{ISBN|978-0-9728223-6-7}}

==External links==
{{Commons category}}

* [https://naturalhistory.si.edu/explore/collections/hope-diamond The Hope Diamond at Smithsonian Institution National Museum of Natural History]
* [https://www.theguardian.com/culture/video/2009/oct/02/hope-diamond-smithsonian-washington-setting Video of Hope Diamond via ''The Guardian'']
* [https://www.si.edu/spotlight/hope-diamond Smithsonian Institution Spotlight – The Hope Diamond]
* {{Skeptoid | id=4499 | number=499 | title= The Hope Diamond: A Curse Deconstructed| date= December 29, 2015 | access-date=}}

{{Authority control}}

{{DEFAULTSORT:Hope Diamond}}
[[Category:Blue diamonds]]
[[Category:Curses]]
[[Category:Golconda diamonds]]
[[Category:Hope family]]
[[Category:Individual diamonds]]
[[Category:Individual necklaces]]
[[Category:Jewelry in the Smithsonian Institution]]
[[Category:Charles William Ferdinand, Duke of Brunswick]]
[[Category:Louis XIV]]
[[Category:Georges Danton]]
[[Category:George IV]]
[[Category:Caroline of Brunswick]]