Hope diamond , sapphire-blue gemstone from India , one of the largest blue diamonds known. It is thought to have been cut from a 112-carat stone brought to France by the jewel trader Jean-Baptiste Tavernier and purchased by Louis XIV in 1668 as part of the French crown jewels . This stone, later called the French Blue, was recut into a 67-carat heart in 1673 and disappeared after the crown-jewel robbery of 1792. The 45.5-carat Hope diamond , named for the London banker Thomas Hope , who purchased it in 1830, was apparently formed from it. The Hope diamond is on display in the Smithsonian Institution , Washington, D.C. 10 Victims of the Hope Diamond Curse 1. JEAN-BAPTISTE TAVERNIER The story goes that French gem merchant Jean-Baptiste Tavernier came down with a raging fever soon after stealing the diamond, and after he died, his body was possibly ravaged by wolves. However, other reports sho...