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.
Sergio (carbonado)
Sergio (Portuguese: Carbonado do Sérgio) is the largest carbonado and the largest rough diamond ever found. It weighed and was found above ground in Lençóis (State of Bahia, Brazil) in 1895 by Sérgio Borges de Carvalho. Like other carbonados it is believed to be of meteoritic origin.