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.
Zinaida Yusupova
As the head of one of the most important noble families in Russia, she also inherited a vast fortune, which meant owning the largest collection of historical jewels in Russia, second only to that of the vaults of the Russian Imperial Family. She was in possession of 21 Tiaras, 255 Brooches, 42 Bracelets, 210 kilos of assorted Objet d'art and hundreds of thousands of loose gems.
Some of the famous gems were: The mid-16th century La Pelegrina pearl, "The Polar Star Diamond" (41.28 carat diamond), The "La Regente Pearl" (fifth largest pearl in the world), The 17th century "Ram’s Head Diamond" (a 17.47-carat diamond), The 17th century "Sultan of Morocco Diamond" (35.67 carats, fourth largest Blue diamond in the world), The 17th century "Diamond Earrings of Marie Antoinette" (two 34.59 carat diamonds), The "Blue Venus Statuette Sapphire" (4-inch-tall sapphire statuette of the goddess Venus atop a large Spinel) and also The 15th century "Ruby Buddha" (70+ carat Ruby statue).