An ultra-rare $25 million blue diamond will hit the auction block at Sotheby’s Geneva Jewelry sale on November 16. Leading the sale, the 8.01 carat rock, dubbed “The Sky Blue Diamond” was ...

Christie's is getting ready to present The Golconda Blue ... refined taste in art and jewels. In 1923, he commissioned Chaumet to set the 23-carat pear-shaped Golconda blue diamond into a bracelet.

The 12.03-carat “Blue Moon” diamond shattered all records Wednesday at Sotheby’s Geneva Magnificent Jewels and Noble Jewels sale. The cushion-shaped Internally Flawless Fancy Vivid blue ...

The 23.24-carat “Golconda Blue” fancy vivid blue diamond has been pulled from the May 14 Christie’s Magnificent Jewels sale. If it went to auction it would have been the largest fancy vivid ...