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

Watch auctions are divided into two categories: Patek Philippe and Rolex, which represent the bulk of the value; and everything else. Likewise, jewelry auctions fall into two camps: colored, large, or ...

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

The world’s largest blue diamond ever to come to auction has sold for 450,925,000 HKD, or $57.5 million. Named “The De Beers Cullinan Blue,” the massive 15.10-carat step-cut gem sold at Sotheby’s in ...

Is the global turmoil driving sales of portable assets? Or is it just a love of rare jewels? By Jill Newman Alisa Moussaieff was in her London office on May 14, having lunch and bidding over the phone ...

From brilliant blues to fiery reds, discover how nature crafts diamonds in every color, and why some shades are rarer than the rest Emma Saaty Selections from the Winston Fancy Color Diamond ...

Engagement rings really should be trend-proof but we all know that's not true. Judging by the record-breaking prices that colored diamonds have recently fetched at auction, these beauties have never ...

The Winston Red Diamond will be unveiled April 1, along with the Winston Fancy Color Diamond Collection. The diamonds have been donated by Ronald Winston, son of well-known jeweler and gem collector ...

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