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.
Philippe II, Duke of Orléans
On 6 June 1717, under the influence of Law and the duc de Saint-Simon, the Regent persuaded the Regency Council to purchase from Thomas Pitt for £135,000 the world's then largest known diamond, a 141 carat (28.2 g) cushion brilliant, for the crown jewels of France. The diamond was known from then on as "Le Régent".