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

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

The Christie’s Geneva Magnificent Jewels auction at the Four Seasons Hotel des Bergues achieved more than $75.8 million.

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 blue diamond weighing nearly 10 carats has sold at auction in Switzerland for 20.5 million Swiss francs ($25.6 million) ...

The Mellon Blue, a 9.51-carat fancy vivid blue diamond formerly owned by the American art collector Bunny Mellon, sold for ...

It's a once in a lifetime buying opportunity, if you have deep pockets. A nine and a half carat blue diamond is being auctioned off by Christie's in Geneva next month. It's called the Mellon Blue, ...

The anonymous donor who gifted $130 million to fund American troop salaries is a reclusive heir to one of the wealthiest banking families in U.S. history. Timothy Mellon, a descendant of the Gilded ...

Billionaire businessman Timothy Mellon – scion of the famed American banking family – is the deep-pocketed donor who gave $130 million to pay US troops during the government shutdown. The reclusive ...