A Christie's employee displays the Mellon Blue, a fancy vivid blue pear-shaped diamond of 9.51 carats, during a preview at ...

GENEVA (Reuters) - The rare and flawless "Blue Moon Diamond" sold for 48.6 million Swiss francs ($48.4 million) to a Hong Kong buyer on Wednesday, setting a world record for a gemstone at auction, ...

From the Hope Diamond to Queen Marie Antoinette’s pearl pendant, in this ultra-luxe category, $32 million serves as the more ...

Good morning, I'm Leila Fadel. Diamonds are expensive, but a rare blue diamond at Christie's auction house was on another level. It just sold for close to $44 million. The 17.6-carat stone is ...

Blue diamonds are very rare, comprising only about 0.02% of mined diamonds. PRETORIA, South Africa -- Botswana unveiled the largest rare blue diamond ever discovered within its borders: a super rare ...

Over the past decade the price of rare diamonds and gems has skyrocketed. Buyers have dropped tens of millions of dollars on jewels, and the competition is intensifying. It seems there's no limit to ...

The world's largest blue diamond now has a price tag to match its rarity. The 15.10-carat diamond, called "The De Beers Cullinan Blue," sold for $57.5 million Wednesday in an auction at Sotheby's in ...

Christie's said that the stone, named "The Sweet Josephine" by the Hong Kong-based Chinese client who bought it, set a world record for any pink diamond ever offered at auction A 12-carat "Blue Moon ...

GENEVA (Reuters) - The rare and flawless "Blue Moon Diamond" sold for 48.6 million Swiss francs ($48.4 million) to a Hong Kong buyer on Wednesday, setting a world record for a gemstone at auction, ...

A 12-carat "Blue Moon Diamond" is pictured while on display at the Natural History Museum of Los Angeles County in Los Angeles, California September 12, 2014. REUTERS/Mario Anzuoni By Stephanie ...