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
In January 2018 Gem Diamonds announced the largest diamond yet discovered at Letseng,a Type IIa D color stone measured at 910 carats.. The same year a light brown diamond of 357.61 carats was discovered.