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.
Alexander Pushkin (diamond)
The Alexander Pushkin () is a 320.65 carat colorless raw diamond, the second largest gem diamond ever found in Russia or the territory of the former USSR (after the 26th Congress of the CPSU), and one of the largest in the world as of 2016. It was mined at the Udachnaya kimberlitic pipe (Yakutia, Far Eastern Federal District) in December 1989 and named after the world-famous Russian writer Alexander Pushkin. It is kept in the Russian Diamond Fund (Moscow Kremlin.)