A pink diamond closed at auction for $57.73 million in Hong Kong Friday night, the most expensive diamond per carat ever sold. The 11.15-carat Williamson Pink Star diamond sold at a Sotheby’s auction.

A pink diamond that is believed to be one of the purest in the world could sell for more than $21 million at auction next month. The "Williamson Pink Star" diamond is 11.15 carats, cushion-cut and has ...

Heritage Auctions, an auction house based in Dallas, Texas, that deals mainly with auction lots and listings primarily pertaining to comics, video games, trading cards, and other items of a similarly ...

A vivid pink diamond that has been nicknamed "The Fortune Pink" is going up for sale at a Christie’s International auction and insiders believe it could fetch up to $35 million. The British auction ...

Sotheby's Paris hosted a fine jewelry auction last month, and several sapphire and diamond rings—much like Kate Middleton's royal engagement ring—sold for staggering prices. A 10.68 carat cushion-cut ...

A 10-carat pink diamond is expected to be sold for more than $35 million when it goes on sale at Sotheby’s, the auction house announced Wednesday. At $3.3 million per carat, it is the most expensive ...