The Regent diamond, 140.5 carats ( 28.1 g ) comes from Golconda, India, was purchased in 1717 by Philippe II d' Orléans from the time of his very famous traveler and gem merchant Jean -Baptiste Tavernier. He was in his time one of the largest diamonds in the world.
He was with the Sancy in 1722 at the coronation of Louis XV. (1710-1774) on its crown. Later, Marie Antoinette (1755-1793) carried him frequently as jewelry. 1804, the stone was used in the Konsulatoren sword that Napoleon wore at his coronation. He is now exhibited in the Louvre in Paris.
He was also the namesake of the vine of the same.