The 31.62-carat Azure Blue, the biggest fancy blue diamond to come to auction, could fetch up to $8.5 million at Christie's ...

“This is the most famous blue diamond that's coming up for sale for the first time ever in over 100 years.” :: The boron in this diamond gives it its blue color and also makes it electro-conductive ...

Choose from a variety of designs, including stud earrings, drop earrings and hoop earrings, all crafted with the finest diamonds. These Blue Nile earrings are versatile and make a dazzling statement.

On Wednesday, a blue diamond at a Hong Kong auction house achieved one of the highest prices for any diamond on the open market. The "De Beers Blue" diamond sold for $57.5 million, Sothebys auction ...

GENEVA -- Sotheby's says a rare blue diamond has sold for a record $48.5 million at a Geneva auction, including fees. The 12.03-carat "Blue Moon" diamond, set in a ring, is said to be among the ...

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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 ...

Sotheby’s is set to auction the De Beers Cullinan Blue Diamond in April during its Hong Kong Luxury Week sales, starting at an estimate of $48-million. The 15.10-carat step-cut diamond is the largest ...

The De Beers Blue, a 15.10-carat internally flawless step-cut Fancy Vivid Blue diamond fetched $15.4 million at auction. The De Beers Blue, the largest vivid blue diamond ever to appear at auction, ...

"Ocean Dream," the largest blue-green diamond ever recorded, sold for $17 million Wednesday, Christie's auction house said.