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.
Crown Jewels of the United Kingdom
The regalia contain 23,578 stones, among them Cullinan I, the largest clear cut diamond in the world at , set in the Sovereign's Sceptre with Cross. It was cut from the largest gem-quality rough diamond ever found, the Cullinan Diamond, discovered in South Africa in 1905 and presented to Edward VII. On the Imperial State Crown are Cullinan II (second-largest of the Cullinan diamonds), the Stuart Sapphire, St Edward's Sapphire, and the Black Prince's Ruby – a large spinel given to Edward the Black Prince by a Spanish king in 1367. The Koh-i-Noor diamond, originally from India, has featured on three consort crowns. A small number of historical objects at the Tower are either empty or set with glass and crystals.