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.

A vivid blue diamond weighing 9.51 carats and previously belonging to Rachel "Bunny" Mellon, the aristocratic philanthropist ...

A nearly 10-carat blue diamond was sold at an auction in Switzerland on Tuesday for 20.5 million Swiss francs ($26.6 million) ...

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 ...

Sotheby’s Geneva has sold a brooch that purportedly once belonged to Napoleon Bonaparte. The winning bid, made by a private ...

A pear-shaped diamond that appears to be wider than a human thumb is going up for auction — and it’s projected to be worth tens of millions of dollars. The 228.31-carat diamond, which has been ...

The top lot of the Sotheby’s auction was a 4.50-carat internally flawless oval mixed-cut fancy vivid blue diamond that ...

A dazzling 13-carat diamond brooch once owned by Napoleon I could fetch up to $600,000 during Sotheby’s Royal and Noble Jewels sale on November 12.

What will $50 million get you at auction? Last month, Sotheby’s sold Sandro Botticelli’s Man of Sorrows painting for $45.5 million, and today it announced it is offering another masterpiece that's ...

A blue diamond weighing nearly 10 carats has sold at auction in Switzerland for 20.5 million Swiss francs ($26.6 million) including fees. The pear-shaped 9.51-carat “Mellon Blue” — named for the late ...

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 ...