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.
Sweet Josephine Diamond
The diamond, which had been owned by an American family for 15 years prior to its 2015 sale, is the largest cushion-shaped diamond classified by the Gemological Institute of America as "fancy vivid" ever to be sold at auction, regardless of color, and it is one of only three "fancy" pink diamonds weighing more than 10 carats to be sold in the previous 250 years.