GENEVA (AP) — A blue diamond weighing nearly 10 carats has sold at auction in Switzerland for 20.5 million Swiss francs ...

These tinted diamonds make up just 0.01 percent of all natural diamonds mined, appearing in shades of pink, blue, yellow, green, and even red. Since 2005, pink diamonds have increased in value by ...

A nearly 10-carat blue diamond was sold at an auction in Switzerland on Tuesday for 20.5 million Swiss francs ($26.6 million) ...

From brilliant blues to fiery reds, discover how nature crafts diamonds in every color, and why some shades are rarer than the rest Emma Saaty Selections from the Winston Fancy Color Diamond ...

The world’s largest blue diamond ever to come to auction has sold for 450,925,000 HKD, or $57.5 million. Named “The De Beers Cullinan Blue,” the massive 15.10-carat step-cut gem sold at Sotheby’s in ...

Engagement rings really should be trend-proof but we all know that's not true. Judging by the record-breaking prices that colored diamonds have recently fetched at auction, these beauties have never ...

Miners in Botswana have uncovered an extraordinary gemstone that has captured the attention of gemologists worldwide. The ...

Deformation, impurities, radiation — many factors lend unexpected color to a diamond. By C. Claiborne Ray A. In diamonds, unexpected colors may arise in a variety of ways. These include small and ...

A new fractional ownership business centered on fancy colored diamonds will launch on May 18. Luxus, founded by hedge fund expert Dana Auslander and fashion journalist Gretchen Gunlocke Fenton, will ...

Relatively small, but slowly and perfectly formed over billions of years, the Argyle Violet diamond is so rare in color that it has its own unique diamond classification: “Fancy Deep Grayish Blueish ...