Cullinan Diamond
The Cullinan Diamond is the largest gem-quality rough diamond ever found, weighing , discovered at the Premier No. 2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the mine's chairman.
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.