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.
Spirit of de Grisogono Diamond
The Spirit of de Grisogono is the world's largest cut black diamond and the world's fifth largest diamond overall. Starting at an uncut weight of , it was taken from its origin in western Central African Republic and cut by Swiss jeweler De Grisogono. The resulting mogul-cut diamond weighs and is set in a white gold ring with 702 smaller white diamonds totaling . The ring is said to have been sold.