A diamond's color rating begins with the highest grade of a letter "D," which is a colorless (white) diamond and continues to Z. Diamonds below a J rating will begin to show a hint of yellow.

Among them are a 8.2-carat blue sapphire ring, set to go for anywhere from $300,000-$500,000, and a 10.95-carat round brilliant-cut diamond set in gold, which will go for somewhere between $40,000 ...

Join us on a dazzling journey into the heart of the Earth as we unveil the largest diamond ever discovered,a record-breaking gem that has stunned the world with its extraordinary size, purity, and ...

One of the rarest pink diamonds in the world -- the 14.93 Fancy Vivid "The Pink Promise Diamond" sold at Christie's Magnificent Jewels Hong Kong auction for an incredible price of nearly $32 million.

The stone will be transformed by HB Antwerp into a collection of polished diamonds, said Lucara president and CEO Eira Thomas in a statement. The exact quality and color rating of the diamond has ...

Israeli Briza Color Diamonds' new technology enables diamond companies to turn polished whites into color enhanced diamonds. Elad Benari & Yoni Kempinski Published: Jul 7, 2011, 7:01 PM (GMT+3 ...