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, ...

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 ...

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 ...

“The Mediterranean Blue,” a 10.3-carat fancy vivid blue diamond, sold for $21.5 million during Sotheby’s sale of high jewelry in Geneva on Tuesday. It was not only the top lot of the sale, but it was ...

‘GEM OF GEMS’ A Christie’s employee displays the Mellon Blue, a fancy vivid blue pearshaped diamond of 9.51 carats, during a preview at Christie’s in Geneva, Switzerland, on Nov.7, ahead of an auction ...

Where it was found: It was long believed that the diamond was extracted from the Kollur Mine in Guntur, India. However, new evidence has revealed that it, along with other Golconda diamonds, may have ...

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 The cushion-shaped ...