A 9.51-carat blue stone that once belonged to the heiress Bunny Mellon sold for $7 million less than at its last auction, a ...

Sotheby's did not disclose the identity of the seller of the brooch, and said that the buyer was a "private collector." ...

The Christie’s Geneva Magnificent Jewels auction at the Four Seasons Hotel des Bergues achieved more than $75.8 million.

The circular jewel was found in a stash of Napoleon’s personal belongings in carriages that got held up on muddy roads as he ...

GENEVA -- A blue diamond weighing nearly 10 carats has sold at auction in Switzerland for 20.5 million Swiss francs ($26.6 ...

Art collector Rachel Lambert "Bunny" Mellon's blue diamond pendant, known as the Mellon Blue, has sold for $27.7 million on ...

The Mellon Blue, a 9.51-carat fancy vivid blue diamond formerly owned by the US art collector Bunny Mellon, has been sold for US$25.6 million at auction.

Diamond giant De Beers slashed the price of its precious solitaires amid plunging sales as bargain-hunting fiancées increasingly opt for cheaper lab-grown gems. Among De Beers’ larger stones, one ...

Lucara Diamond discovers a 2,036-carat diamond in Botswana, reaffirming Karowe as the world's most incredible mine.

LAS VEGAS--(BUSINESS WIRE)--The diamond market showed further signs of recovery in March. The price stabilization trend that began in mid-February expanded to a wider range of categories, with price ...

The rare Mellon Blue 9.51-carat teardrop-shaped blue diamond sold for $25.6 million at an auction on Tuesday – $7 million ...