Natural diamonds are losing their sparkle. After a postpandemic surge in demand in 2021 and 2022, natural-diamond prices are ...

Selling De Beers, the biggest transaction ever attempted in the diamond industry, just got a little harder with news that it ...

The gem is a carbonado, one of the toughest forms of natural diamond. Black diamonds are usually ... Sotheby's is describing the sale as a "once-in-a-lifetime opportunity to acquire one of the ...