Blue diamonds are considered the rarest and most desired on the market. A particularly big one sold for millions at Sotheby’s on Thursday, scraping just beneath the surface of its $26 million ...

South Africa's Cullinan mine has yielded a rare blue diamond of 41.82 carats, with experts saying it could be worth more than $40 million.

A rare blue diamond set in a ring sold for $43.8 million at a Christie's auction in Geneva. Christie's said that the 17.61-carat diamond, the Bleu Royal, is among the rarest to exist. The Gemological ...

Add Yahoo as a preferred source to see more of our stories on Google. Watch auctions are divided into two categories: Patek Philippe and Rolex, which represent the bulk of the value; and everything ...

An impeccable diamond coming up for auction takes pretty in pink to an entirely new level. The Eternal Pink Diamond, a 10.57-carat jewel, was fashioned from a 23.78-carat rough stone discovered in ...

A rare bi-colored pink diamond of “astounding weight” was found at the Karowe diamond mine in Botswana, according to the Gemological Institute of America. Lucara Diamond A rare rough, or uncut, pink ...

In a year that has seen more than its share of exceptional fancy-colored diamonds entering the auction market, one more has emerged: a 13.15-carat Fancy Vivid pink diamond that will likely be the top ...