The Enigma, a 555.55-carat Fancy Black Diamond, is believed to have come from outer space.
The Enigma: Billion-year-old black diamond sold for £3.16m
Giant white diamond 'The Rock' makes debut in Dubai - Newspaper
GMA News - Isang rare black diamond ang naibenta sa halagang $4.3-M o P220-M! Ayon sa Sotheby's auction house, ito rin ang largest cut diamond ever to come to auction. BASAHIN
Black 555.55-carat diamond dubbed 'The Enigma' sells for £3.1 million at auction
The Enigma: Mysterious black diamond up for auction - BBC News
World's largest cut diamond, The Enigma, sells for $4.3 million
Black Diamonds Gain Respect
Black 555.55-carat diamond dubbed 'The Enigma' sells for £3.1 million at auction
Black diamond, largest ever cut, sells for £3.2 million
Sotheby's Sells World's Largest Diamond Enigma for $4.3M, Accepts Crypto Payment
Billion-Year-Old Black Diamond 'The Enigma' Sells For More Than £3 Million