Sotheby's says it will accept cryptocurrency for The Enigma diamond, which could sell for $6.8 million. A reputed piece of the final frontier is slated to go on the auction block as Sotheby's ...
A black diamond weighing a staggering 555.55 carats is going up for auction at Sotheby's and living up to its name "The Enigma." Bidding opens on Feb. 3 at 6 a.m. PST (1400 GMT) and closes on Feb ...
Yet, the enigma that remains unsolved is the nature of this diamond-shaped craft and the reason for its pursuit by a military ...