IN A TWIST of geological poetry, Rio Tinto’s Diavik Diamond Mine in Canada’s remote Northwest Territories has delivered one ...

A rare blue diamond was displayed at an exhibition of $100 million worth of the world’s rarest diamonds in the United Arab ...

Visitors focused on the 10-karat blue diamond from South Africa, considered one of the most important blue diamonds ever discovered.

Russian diamond producer Alrosa showcased the largest diamond ever cut in the country’s history—a 100-carat vivid yellow gem ...