But when it comes to the Enigma, a 555.55-carat Fancy Black Natural Colour diamond that went on sale with Sotheby’s earlier this month, that is a mystery. The prevailing theory is that it came ...

Last week at Sotheby’s Dubai, a 555.55 carat black diamond called “The Enigma” was unveiled and it will become the largest faceted diamond of any kind to appear at auction when it goes under ...

He was also accused of spending PulseChain investor funds on McLaren and Ferrari sports cars, four Rolex watches costing $3.02 million, and "The Enigma," a 555-carat black diamond costing 3.16 ...