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The Deepdene is a 104.52 carats (20.904 g) yellow diamond widely considered to be the largest irradiated diamond in the world.
The Pink Star, formerly known as the Steinmetz Pink, is a diamond weighing 59.60 carats, rated in color as Fancy Vivid Pink by the Gemological Institute of America. The Pink Star was mined by De Beers in 1999 in South Africa, and weighed 132.5 carats in the rough. The Pink Star is the largest known diamond having been rated Vivid Pink. As a result of this exceptional rarity, the Beny Steinmetz Group called Steinmetz Diamonds took a cautious 20 months to cut the Pink. It was unveiled in Monaco on 29 May 2003 in a public ceremony.
The Pumpkin Diamond is a diamond weighing 5.54 carats rated in color as Fancy Vivid Orange by the Gemological Institute of America. While this may seem small when compared to other famous diamonds, the Pumpkin Diamond is, in fact, one of the largest Fancy Vivid Oranges the GIA reports having rated and is unique compared to other orange diamonds because it is light-colored and notably intense. The Pumpkin Diamond was mined in Central African Republic and then imported into South Africa for sale, it was later cut and polished by William Goldberg, and put to auction at Sotheby's where it was bought by Ronald Winston of the House of Harry Winston for the price of $1.3 million. It is currently estimated to be valued at $3 million.
Harry Winston was an American jeweler. He donated the Hope Diamond to the Smithsonian Institution in 1958 after owning it for a decade. He also traded the Portuguese Diamond to the Smithsonian in 1963 in exchange for 3,800 carats of small diamonds.
De Grisogono is a Swiss luxury jeweller founded in Geneva, Switzerland, in 1993 by Lebanese-Italian black diamond specialist Fawaz Gruosi. The Italian name Grisogono is derived from the Latin Chrysogonus which comes from the Greek Chrysogonos χρῡσό-γονος, meaning "begotten of gold". The company filed for bankruptcy on 29 January 2020. In 2022 it was bought by the Damac Group of Dubai.
The Briolette of India is a colorless diamond that was found in India. It is cut in a briolette shape, and is a D-coloured (colourless) type IIa diamond. Its history was thought to date from the 12th century, when it was first acquired by Eleanor of Aquitaine, the Queen consort of King Louis VII of France between 1137 and 1152. This makes the Briolette of India the oldest diamond on record in the world, even older than the famous Koh-i-Noor.
Brown diamonds are the most common color variety of natural diamonds. In most mines, brown diamonds account for 15% of production. The brown color makes them less attractive to some people as gemstones, and most are used for industrial purposes. However, improved marketing programs, especially in Australia and the United States, have resulted in brown diamonds becoming valued as gemstones and even referred to as chocolate diamonds.
Graff is a British multinational jeweller based in London. It was founded by British jeweller Laurence Graff in 1960. A vertically integrated company, Graff operations comprise the design, manufacture and retail distribution of jewellery and watches.
Harry Winston, Inc. is an American luxury jeweler and producer of Swiss timepieces. The company was founded in 1932 as Harry H. Winston Jewels, Inc. and changed its name to Harry Winston Inc. in January 1936. The company is named after its founder, Harry Winston, who was called by many as the "King of Diamonds".
Alexandre Reza was a Paris-based jeweler known for his diverse and rare collection of precious gemstones. He is lauded as the greatest gem collector of modern times.
The Archduke Joseph is a colorless, antique cushion-shaped brilliant, originally weighing 78.54 carat, purchased by Molina Jewelers of Arizona sometime in the late-1990s and slightly re-cut to 76.45 carat to improve clarity and symmetry. It is, on the Gemological Institute of America (GIA) color and clarity scales, a D grade, IF diamond and the largest DIF ever graded at the GIA; and it is of type IIa.
The Princie Diamond is an approximately 34.65-carat cushion-cut fancy intense pink diamond discovered 300 years ago in the Golconda mines. Christie's say that the Princie Diamond is believed to be the fourth largest pink diamond in the world, after the Daria-i-Noor, the Noor-ol-Ain - which are both part of the Iranian Crown Jewels; both were cut, according to experts, from one single c. 242-carat pink diamond, - and the Pink Star, a diamond weighing 59.60 carats.
The Blue Moon of Josephine is a 12.03 carats (2.406 g) blue diamond, described as flawless by experts, that was discovered in South Africa in January 2014 and was sold at a Sotheby's auction in Geneva in November 2015 at a record-setting price of $48.4 million. The diamond is the largest cushion-shaped blue stone classified as "fancy vivid" ever to appear at auction.
The Sweet Josephine is a 16.08 carats (3.216 g) pink diamond that was sold at a Christie's auction in Geneva in November 2015 for $28.5 million, a record price for a jewel of its kind and one that exceeded its estimated price of $23-28 million.
The Oppenheimer Blue is a 14.62-carat (2.924 g) vivid blue diamond that in May 2016 became the most expensive jewel ever sold at auction, until April 2017 when it was surpassed by the Pink Star diamond.
Black, Starr & Frost, previously known as Marquand and Co, is an American jewelry company. Founded in 1810 as Marquand and Co., the company is the oldest continuously operating jewelry firm in the United States. The company has acted as a retailer, rather than manufacturer, for most of its history.
Blue diamond is a type of diamond which exhibits all of the same inherent properties of the mineral except with the additional element of blue color in the stone. They are colored blue by trace impurities of boron within the crystalline lattice structure. Blue diamonds belong to a subcategory of diamonds called fancy color diamonds, the generic name for diamonds that exhibit intense color.
Pink diamond is a type of diamond that has pink color. The source of their pink color is greatly debated in the gemological world but it is most commonly attributed to plastic deformation that these diamonds undergo during their formation.
The Pink Legacy is a pink diamond that was purchased by Harry Winston, Inc. in 2018. It was renamed Winston Pink Legacy by CEO Nayla Hayek. The diamond was sold at a Christie's auction for 50.375 million Swiss francs ($50m), and at $2.6 million per carat it set a world record at the time of its sale for a pink diamond.
References
- 1 2 3 "Harry Winston Renames World's Largest Flawless Vivid Blue Diamond, 'The Winston Blue'". Forbes. Retrieved 2014-05-16.
- ↑ "World's largest blue diamond going for $25 million". CNBC. 14 May 2014. Retrieved 2014-05-16.
- 1 2 "THE BLUE | Jewelry Auction | ring, diamond | Christie's". Christies.com. Retrieved 2014-05-16.
- ↑ "World's largest blue diamond sells for $23.8 million". In.reuters.com. 2009-02-09. Archived from the original on 2014-05-17. Retrieved 2014-05-16.
- ↑ "Harry Winston Renames World's Largest Flawless Vivid Blue Diamond, 'The Winston Blue' News Forbes.com News". News.nom.co. Archived from the original on 2014-05-17. Retrieved 2014-05-16.
- ↑ "The largest flawless Vivid blue diamond in the world leads Christies Geneva Magnificent Jewels Sale". The Jewellery Editor. 2013-04-16. Retrieved 2014-05-16.
- ↑ "The Winston Blue breaks world record at Christie's Geneva sale". Diamondworld.net. Retrieved 2014-05-16.
- ↑ Mulier, Thomas (15 May 2014). "Blue Diamond Returns Auction Crown to Christie's in One Day". Bloomberg. Retrieved 2014-05-16.
- ↑ "Big, blue, flawless...goes for $24million". The Hindu. 15 May 2014. Retrieved 16 May 2014.