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The Allnatt Diamond is a diamond measuring 101.29 carats with a cushion cut, rated in color as Fancy Vivid Yellow by the Gemological Institute of America. This diamond was named after one of its holders, Major Alfred Ernest Allnatt, a soldier, sportsman, art patron and benefactor.
A chemically pure and structurally perfect diamond is perfectly transparent with no hue, or color. However, in reality almost no gem-sized natural diamonds are absolutely perfect. The color of a diamond may be affected by chemical impurities and/or structural defects in the crystal lattice. Depending on the hue and intensity of a diamond's coloration, a diamond's color can either detract from or enhance its value. For example, most white diamonds are discounted in price when more yellow hue is detectable, while intense pink diamonds or blue diamonds can be dramatically more valuable. Of all colored diamonds, red diamonds are the rarest. The Aurora Pyramid of Hope displays a spectacular array of naturally colored diamonds, including red diamonds.
The Heart of Eternity is a diamond measuring 27.64 carats, rated in color as "Fancy Vivid Blue" by the Gemological Institute of America. The Heart of Eternity was cut by the Steinmetz Group, who owned the diamond before selling it to the De Beers Group.
The Ocean Dream is a diamond measuring 5.51 carats, rated in color as Fancy Deep Blue-Green by the Gemological Institute of America. The Ocean Dream is the first and one of the only natural diamonds known to the GIA to possess a blue-green hue, making it one of the rarest diamonds in the world. (A blue-green colour is commonly seen in artificially enhanced diamonds, whose colour is imparted by various irradiation methods. The Ocean Dream originated in Central Africa, and is currently owned by the Cora Diamond Corporation.
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.
The Premier Mine is an underground diamond mine owned by Petra Diamonds in the town of Cullinan, 40 kilometres (25 mi) east of Pretoria, Gauteng Province, South Africa. Established in 1902, it was renamed the Cullinan Diamond Mine in November 2003 in celebration of its centenary. The mine is a carrot-shaped volcanic pipe and has a surface area of 32 hectares. The mine rose to prominence in 1905, when the Cullinan Diamond – the largest rough diamond of gem quality ever found – was discovered there.
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.
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.
"Australian Facetors Guild Limited - Did You Know. Amazing Record Breaking Gemstones". facetorsguild.com.au. Retrieved 2024-07-01.
The Cora Sun-Drop Diamond is the largest known yellow pear-shaped diamond, weighing 110.3 carats (22.06 g). It was sold for $10.9 million at Sotheby's auction in Geneva and set a world record price for a yellow diamond.
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 Winston Blue is the name given to what was the largest flawless vivid blue diamond bought by Harry Winston, Inc. on May 15, 2014, from an anonymous person for $23.8 million at Christie's Geneva Magnificent Jewels sale. The approximately $1.8003 million per carat price paid for the 13.22-carat diamond is a world record for a blue diamond. Harry Winston, Inc. had also bought a 101.73-carat colorless diamond named Winston Legacy at Christie's Geneva jewelry auction in 2013. The American luxury jeweler had then paid $26.7 million for the colorless diamond, which is a world record for the highest price paid per carat for a colorless diamond.
The Sunrise Ruby is the world's most expensive ruby, most expensive coloured gemstone, and most expensive gemstone other than a diamond.
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.
Lesedi La Rona, formerly known in media as Karowe AK6 or as Quad 1 by the personnel at the mine, is the fifth-largest diamond ever found, and the third-largest of gem quality. It was found in the Karowe mine, in Botswana on 16 November 2015.
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.
The Aurora Green Diamond is a 5.03-carat (1.006 g) vivid green diamond with VS2 clarity. In May 2016, the Aurora Green became the largest vivid green diamond to ever sell at auction. The record was previous held by a 2.54 carat Fancy Vivid Green VS1 diamond that was sold by Sotheby’s on November 17, 2009, for $1.22 million per carat according to the Diamond Investment & Intelligence Center. On May 31, 2016, the diamond, which was originally owned by Scarselli Diamonds was sold by Christie's for a record price per carat of $3.3 million to Chinese jewelry company Chow Tai Fook, totaling $16.8 million.
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.
References
- 1 2 3 "Diamond to be sold by Sotheby's at record price of $60m". BBC News. 25 September 2013. Retrieved 25 September 2013.
- ↑ "Pink Star diamond fetches record $83m at auction". BBC News, Business. BBC. 13 November 2013. Retrieved 14 November 2013.
- ↑ Bennett, David (13 November 2013). "'The Pink Dream': An Auction Record for Any Jewel". Sotheby’s. Retrieved 14 November 2013.
- ↑ DeMarco, Anthony. "The $83 Million Pink Diamond Default". Forbes. Retrieved 1 July 2024.
- ↑ "Oppenheimer Blue diamond sets new auction record". BBC News. 18 May 2016. Retrieved 1 July 2024.
- ↑ Sheppard, David (4 April 2017). "'Pink Star' diamond dazzles at Sotheby's auction, selling for record $71m". Financial Times. Retrieved 4 April 2017.
- Natural resources of Africa. "The Steinmetz Pink". Retrieved 26 April 2017.
- Smithsonian Museum of Natural History. "The Splendor of Diamonds" Archived 27 January 2007 at the Wayback Machine . Retrieved 13 April 2005.
- The World of Famous Diamonds. "The Steinmetz Pink".