Leibish & Co., unveiled its World of Colors guide for identifying fancy colored diamonds in New York Thursday (January 19). A day earlier, I spoke privately with Leibish Polnauer, the president and ...

While some diamonds whisper elegance, fancy color diamonds shout it—and their growing market value reflects that. Prices for fancy color diamonds have surged 205 percent over the past two decades, ...

Blue diamonds are considered the rarest and most desired on the market. A particularly big one sold for millions at Sotheby’s on Thursday, scraping just beneath the surface of its $26 million ...

In a year that has seen more than its share of exceptional fancy-colored diamonds entering the auction market, one more has emerged: a 13.15-carat Fancy Vivid pink diamond that will likely be the top ...

A Sotheby's employee displays the rare Blue Moon Diamond during a preview at Sotheby's in Geneva, Switzerland, on Nov. 4. AP GENEVA — A large blue diamond, one of the world’s rarest, could fetch $35 ...

The fancy color diamond market is on the upswing, according to a report, with blue diamonds seeing the largest gains. Blue diamonds saw a 5.9% increase in value in the fourth quarter of 2017 in a year ...