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