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.
Letseng diamond mine
Previously the largest diamond found at Letseng was the 601 carat (120 g) Lesotho Brown, recovered in 1967.