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.
Jewels of the Nizams
There are 173 jewels, which includes emeralds weighing nearly , and pearls exceeding 40,000 chows. The collection includes gemstones, turban ornaments, necklaces and pendants, belts and buckles, earrings, armbands, bangles and bracelets, anklets, cufflinks and buttons, watch chains, and rings, toe rings, and nose rings. Among them is the seven-stringed Basrah pearl necklace, known as Satlada, which has 465 pearls embedded in it. One of the prized possessions in the collection is the Jacob Diamond, the fifth largest diamond in the world weighing 184.75 carats, which was found by the last Nizam, Osman Ali Khan, in the toe of his father’s shoe at Chowmahalla Palace and he himself used it as a paper weight for a long time.