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.
Lucara Diamond
Lucara Diamond Corp. () is a diamond exploration and mining company, operating in southern Africa but established in Canada. In November 2015, Lesedi La Rona, the world's second largest gem-quality diamond ever found, was found at the Karowe mine in Botswana.On 18November 2015, the company announced the discovery of the Lesedi La Rona, the world's second largest gem-quality diamond ever (second only to the 3,106 carat Cullinan). The type IIa diamond was found in the company's Karowe mine in north-central Botswana. The diamond weighs 1,111 carat and measures . A day later, two more diamonds weighing 813 and 374 carat, were also found. All the stones came from the AK6 pipe opened 18 months earlier, it has since yielded over 1 million carats of diamonds. The company has sold the 813 carat Constellation in May 2016 for $63.1 million and a 341.9 carat diamond in July 2015 for $20.6 million. The Lesedi has since sold for $53 million.