The Florentine Diamond is a lost

diamond Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of e ...

of Indian origin. It is light yellow in colour with very slight green overtones. It is cut in the form of an irregular (although very intricate) nine-sided 126-facet double rose cut, with a weight of 137.27 carats (27.454 g). The stone is also known as the Tuscan, the Tuscany Diamond, the Grand Duke of Tuscany, the Austrian Diamond, Austrian Yellow Diamond, and the Dufner Diamond.

History

The stone's origins are disputed. Reportedly, it was cut by

Lodewyk van Bercken Lodewyk van Bercken (also known in French as ''Louis de Berquem'') was a mid- to late-15th century Flemish Region, Flemish jeweller and diamond cutter, renowned in the industry for inventing the scaif. The device revolutionized the diamond cutti ...

for

Charles the Bold Charles Martin (10 November 1433 – 5 January 1477), called the Bold, was the last duke of Burgundy from the House of Valois-Burgundy, ruling from 1467 to 1477. He was the only surviving legitimate son of Philip the Good and his third wife, ...

, Duke of Burgundy. Charles is said to have been wearing it when he fell in the

Battle of Nancy The Battle of Nancy was the final and decisive battle of the Burgundian Wars, fought outside the walls of Nancy on 5 January 1477 by Charles the Bold, Duke of Burgundy, against René II, Duke of Lorraine, and the Swiss Confederacy. René's ...

on 5 January 1477. A peasant or foot soldier found the diamond on the Duke's person and sold it for 2 francs, thinking it was glass. The new owner Bartholomew May, a citizen of

Bern Bern (), or Berne (), ; ; ; . is the ''de facto'' Capital city, capital of Switzerland, referred to as the "federal city".; ; ; . According to the Swiss constitution, the Swiss Confederation intentionally has no "capital", but Bern has gov ...

, sold it to the Genoese, who in turn sold it to

Ludovico Sforza Ludovico Maria Sforza (; 27 July 1452 – 27 May 1508), also known as Ludovico il Moro (; 'the Moor'), and called the "arbiter of Italy" by historian Francesco Guicciardini,

. By way of the

Fugger The House of Fugger () is a German family that was historically a prominent group of European bankers, members of the fifteenth- and sixteenth-century mercantile patriciate of Augsburg, international mercantile bankers, and venture capitalists. ...

s, it came into the Medici treasury at Florence.

Pope Julius II Pope Julius II (; ; born Giuliano della Rovere; 5 December 144321 February 1513) was head of the Catholic Church and ruler of the Papal States from 1503 to his death, in February 1513. Nicknamed the Warrior Pope, the Battle Pope or the Fearsome ...

is also named as one of its owners. Another version of the stone's early history claims that the rough stone was acquired in the late 16th century from the King of

Vijayanagar The Vijayanagara Empire, also known as the Karnata Kingdom, was a late medieval Hindu empire that ruled much of southern India. It was established in 1336 by the brothers Harihara I and Bukka Raya I of the Sangama dynasty, belonging to the ...

in southern

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

by the Portuguese Governor of

Goa Goa (; ; ) is a state on the southwestern coast of India within the Konkan region, geographically separated from the Deccan highlands by the Western Ghats. It is bound by the Indian states of Maharashtra to the north, and Karnataka to the ...

, Ludovico Castro, Count of Montesanto. The crystal was deposited with the

Jesuit The Society of Jesus (; abbreviation: S.J. or SJ), also known as the Jesuit Order or the Jesuits ( ; ), is a religious order (Catholic), religious order of clerics regular of pontifical right for men in the Catholic Church headquartered in Rom ...

s in

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

until, after lengthy negotiations,

Ferdinando I de' Medici, Grand Duke of Tuscany Ferdinando I de' Medici, Grand Duke of Tuscany (30 July 1549 – 17 February 1609) was Grand Duke of Tuscany from 1587 to 1609, having succeeded his older brother Francesco I, who presumably died from malaria. Early life Ferdinando was the ...

succeeded in buying it from the Castro-Noronha family for 35,000 Portuguese scudi crocati. Duke Ferdinand's son, Cosimo II, finally entrusted his father's purchase to a cutter, Pompeo Studentoli, a Venetian working in

Florence Florence ( ; ) is the capital city of the Italy, Italian region of Tuscany. It is also the most populated city in Tuscany, with 362,353 inhabitants, and 989,460 in Metropolitan City of Florence, its metropolitan province as of 2025. Florence ...

. The finished gem was delivered on 10 October 1615. An inventory drawn up on Cosimo's death confirms the acquisition of the rough diamond by Ferdinand and describes the gem as 'faceted on both sides and encircled by a diamond encrusted band'. It is also known as Dufner Diamond. Documented history begins when

Jean Baptiste Tavernier Jean-Baptiste Tavernier (1605–1689) was a 17th-century French gem merchant and traveler. Tavernier, a private individual and merchant traveling at his own expense, covered, by his own account, 60,000 leagues in making six voyages to Persia ...

, the French jeweller and traveller, saw the stone among the possessions of

Ferdinando II de' Medici, Grand Duke of Tuscany Ferdinando II de' Medici (14 July 1610 – 23 May 1670) was Grand Duchy of Tuscany, grand duke of Tuscany from 1621 to 1670. He was the eldest son of Cosimo II de' Medici, Grand Duke of Tuscany, Cosimo II de' Medici and Archduchess Maria Mad ...

in 1657. It then passed into the hands of the Habsburgs when the last of the

Medicis The House of Medici ( , ; ) was an Italian banking family and political dynasty that first consolidated power in the Republic of Florence under Cosimo de' Medici and his grandson Lorenzo "the Magnificent" during the first half of the 15th c ...

died through the marriage of Francis III Stephan of Lorraine to Empress

Maria Theresa of Austria Maria Theresa (Maria Theresia Walburga Amalia Christina; 13 May 1717 – 29 November 1780) was the ruler of the Habsburg monarchy from 1740 until her death in 1780, and the only woman to hold the position in her own right. She was the sovereig ...

and was placed in the Habsburg Crown Jewels in the

Hofburg The Hofburg () is the former principal imperial palace of the Habsburg dynasty in Austria. Located in the Innere Stadt, center of Vienna, it was built in the 13th century by Ottokar II of Bohemia and expanded several times afterwards. It also ser ...

Vienna Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...

. At the time, it was valued at $750,000. The diamond was set in a hat

aigrette The term aigrette (; from the French for egret, or ''lesser white heron'') refers to the tufted crest or head-plumes of the egret, used for adorning a headdress. The word may also identify any similar ornament, in gems. History and description ...

and displayed together with other crown jewels in the Imperial Treasury in display case XIII. In 1865, the diamond's weight and specificities were properly documented by Dr. Moritz Hoernes, head of the

Imperial and Royal The phrase Imperial and Royal (, ) refers to the court/government of the Habsburgs in a broader historical perspective. Some modern authors restrict its use to the Dual Monarchy of Austria-Hungary from 1867 to 1918. During that period, it in ...

Court Mineral Cabinet. A

plaster Plaster is a building material used for the protective or decorative coating of walls and ceilings and for moulding and casting decorative elements. In English, "plaster" usually means a material used for the interiors of buildings, while "re ...

cast was also made. A

rhinestone A rhinestone, paste or diamanté ( , ) is a diamond simulant originally made from rock crystal but since the 19th century from crystal glass or polymers such as acrylic. Origins Originally, rhinestones were rock crystals gathered from t ...

model was made at L. Saemann in Paris, with great care taken that the colour tone of the glass replica corresponded as closely as possible to the original stone. The colour of the Florentine was described as "wine mixed tenfold with water". This historic copy is kept at the

Natural History Museum, Vienna The Natural History Museum Vienna () is a large natural history museum located in Vienna, Austria. The NHM Vienna is one of the largest museums and non-university research institutions in Austria and an important center of excellence for all matt ...

. After the fall of the

Austrian Empire The Austrian Empire, officially known as the Empire of Austria, was a Multinational state, multinational European Great Powers, great power from 1804 to 1867, created by proclamation out of the Habsburg monarchy, realms of the Habsburgs. Duri ...

after

World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

, the stone by order of Emperor

Charles I of Austria Charles I (, ; 17 August 1887 – 1 April 1922) was Emperor of Austria, King of Hungary (as Charles IV), and the ruler of the other states of the Habsburg monarchy from November 1916 until the monarchy was abolished in November 1918. He was the ...

was removed from the Imperial Treasury and taken with him into exile. The stone was stolen some time after 1918 by a person close to the Imperial family and taken to

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a considerably smaller portion in the Northern Hemisphere. It can also be described as the southern Subregion#Americas, subregion o ...

with other Crown Jewels. After this, it was rumoured that the diamond was brought into the

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

in the 1920s and was recut and sold. The Florentine jeweller Paolo Penko recreated the diamond with

cubic zirconia Cubic zirconia (CZ) is the cubic crystalline form of zirconium dioxide (ZrO2). The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused with zircon, which is a zirc ...

in a set as it appeared based on historical records and description when

Archduchess Maria Maddalena of Austria Maria Maddalena of Austria (, ; 7 October 1589 – 1 November 1631) was Grand Duchess of Tuscany by her marriage to Cosimo II in 1609 until his death in 1621. With him, she had eight children, including a duchess of Parma, a grand duke of Tus ...

(1589–1631) wore it. This is exhibited at the

Palazzo Medici-Riccardi The Palazzo Medici, also called the Palazzo Medici Riccardi after the later family that acquired and expanded it, is a 15th-century Renaissance palace in Florence, Italy. It was built for the Medici family, who dominated the politics of the Repu ...

in Florence.

In literature

The Florentine Diamond plays a role in Dan Hanel’s 2015 novel ''In The Shadow of Diablo: Death at the Healing Waters'', Amy Meyerson's 2020 novel ''The Imperfects'', Justin B. Hodder's 2021 novel ''The Mists of Morne'', as well as the 2022 novel ''Der rote Diamant'' (''The Red Diamond'') by

Thomas Hürlimann Thomas Hürlimann (born 21 December 1950) is a Swiss playwright and novelist. Biography Hürlimann was born in Zug, Switzerland. He is a son of the former government and federal councilor (Minister) Hans Hürlimann. He studied philosophy in Züri ...

References

External links

{{Authority control Yellow diamonds Imperial Treasury, Vienna Individual diamonds Golconda diamonds Stolen works of art

History

In literature

See also

References

Further reading

External links