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

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

Napoleon’s brooch led the auction of 65 royal and noble jewels, which achieved a “white glove” result—every lot sold—for a ...

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

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

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 ...

A legendary jewel of the Hapsburg dynasty — not seen since 1919 and thought lost, stolen or recut — has actually been safe in ...

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

Explorers find evidence of a rare green diamond in Finland, with minerals pointing to its origin hidden beneath the ice.

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