Petra Diamonds
The Cullinan mine continues to produce large stones. The Cullinan Heritage, a white diamond, was discovered in September 2009. This stone was the 19th biggest uncut diamond ever found and was sold in February 2010 to Chow Tai Fook Jewellery for $35.5m, the highest price ever paid for an uncut diamond. The previous record was held by Gem Diamonds' Leseli La Letšeng, which was bought for $18.4m by Graff Diamonds in December 2008.
Red diamond
The majority of red diamonds that are mined each year come from the Argyle diamond mine in Kimberley, Western Australia. However, they have also been discovered in Brazil, Russia, and certain African Countries. The first red diamond known to public record was acquired in 1956 by a Montana rancher named Warren Hancock, who later sold it for a record setting $927,000 at auction in 1987. Other diamonds of note, such as the Moussaieff Red and the Kanzanjian Red, are known to have originated in Brazil and Africa, respectively. Generally speaking, red diamonds are found in the same locations where pink diamonds have also been discovered, and are not found if there are no pink diamonds nearby. Since the majority of the world’s pink diamonds are discovered in the Argyle Mine, it follows that the majority of red diamonds are discovered there as well, although this is not exclusively the case. However, if a red diamond is traced to the Argyle mine in origin, it lends additional value to the diamond’s price as is the case with all Argyle diamonds.