Blame it on the demand for their extraordinary stones—devoid of nitrogen, their color has been described as “whiter than white” and “as clear ... Blue—the largest Fancy Vivid Blue ...

Al Cook, chief executive of De Beers, told the Financial Times there were “no US diamond mining jobs to protect” and that the company had held discussions with several governments about the matter.

An exceptionally-rare blue diamond went under the hammer in Geneva late Tuesday, selling for $21.5 million, Sotheby's auction ...

whose name was not given, for 17.9 million francs ($21.5 million), Sotheby's said. The Mediterranean Blue, which is a brand-new blue diamond recently mined from the legendary Cullinan mines of ...

GENEVA - A 10-carat blue diamond which could fetch $20 million when it goes under the hammer later this month was presented by auction house Sotheby's in Geneva on Thursday. The cushion-shaped ...

whose name was not given, for 17.9 million francs ($21.5 million), Sotheby's said. The Mediterranean Blue, which is a brand-new blue diamond recently mined from the legendary Cullinan mines of ...