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 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.
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 £135000 the world's largest known diamond a 141 carat (282 g) cushion brilliant for the crown jewels of france the diamond was known from then on as le régent