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.
Mmadikola
On 9February 2016, Thembani Moitlhobogi from Mmadikola, won the competition of naming the second-largest gem-quality diamond ever found. He named the stone Lesedi La Rona which means "Our Light". He stated that his reason for the name was that "the diamond is a pride, light and hope of Batswana". During the competition Lucara Diamond Corporation received 11,000 emails and 1,000 SMSs with name suggestions. In addition to naming the diamond, Moitlhobogi also received P25,000 (about $2,170).