The Alrosa Spectacle Diamond, a 100.94 carat, D-color, internally flawless, type IIa diamond was sold for US$14.1 million at Christie's Geneva's Magnificent Jewels sale. The emerald-cut diamond is said to be the largest diamond ever cut in Russia. Alrosa recovered the diamond, originally a 207.29 carat rough, in Udachny in 2016, later polishing it at the Diamonds of Alrosa facility in Moscow.
