From sparkling multi-million-dollar diamonds to custom designs, here are the most expensive diamond rings in the world that ...

Weighing in at 14.62 carats, the Oppenheimer Blue is the largest vivid blue diamond ever sold at auction. It was purchased for $57.5 million at a Christie’s auction in 2016 by an anonymous buyer.

"The Mediterranean Blue" will be auctioned by Sotheby’s this Spring in Geneva with a classification representing less than ...

With its gorgeous fancy vivid blue hue that’s reminiscent of the waters off the Cote d’Azur, the cushion modified brilliant diamond is estimated to fetch $20 million (CHF 18 million ...

An ultra-rare diamond worth an estimated $20m is coming to Abu Dhabi. The 10.03-carat precious gem is on a world tour, with ...

A stunning blue fancy colour diamond is expected to impress collectors at an upcoming sale, entering the auction with an eye-popping pre-sale estimate.

The latest blue diamond to hit the auction block certainly lives up to its namesake. The 10.03-carat Mediterranean Blue gem will be the crown jewel at Sotheby’s High Jewelry Auction this May, on sale ...

“Any vivid blue diamond is a discovery worth celebrating, but one of this size and depth of color is a rare event,” said Quig Bruning, Sotheby’s Head of Jewelry for the Americas & EMEA.

Mediterranean Blue, a 10.03-carat blue diamond, will be revealed to the public for the first time at Abu Dhabi’s Bassam ...

“The Mediterranean Blue” is 10.3-carat fancy vivid blue diamond with VS2 clarity that is the highlight of Sotheby's Geneva auction in May. Its estimate is $20 million.