The Korloff Noir is one of the world's largest known black diamonds. It is an 88-carat diamond, with 57 edges. Before it was cut and polished, it had 421 carats. It is named for the Korloff -Sapojnikoff family, members of the Russian nobility, who once owned it. In 1978, Daniel Paillasseur, a French jeweller, purchased it.^[1] The Korloff Noir is currently owned by the Korloff Company, which was founded by Paillasseur. It is insured for $37 million.^[2][3][4]