Messika is preparing to reveal a necklace with the 20,46-carat Okavango Blue at Couture Week, July 6 in Paris.

Where it was found: It was long believed that the diamond was extracted from the Kollur Mine in Guntur, India. However, new evidence has revealed that it, along with other Golconda diamonds, may have ...

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, ...

One of the most valuable blue diamonds to ever feature at an auction could sell for more than $48 million, according to Sotheby’s. Named “The De Beers Cullinan Blue,” it is the biggest vivid blue ...

Gems, minerals and fossils have always intrigued Phil Hathcock. Searching through dirt and mud and discovering little treasures has long been a favorite hobby. As part of a family business years ago, ...

If you’re feeling blue, Christie’s has just the gem. The auction house is offering an extraordinarily large 31.62-carat blue diamond at the Magnificent Jewels sale in New York this June. The aptly ...

The government of Botswana, which still owns the gem, tapped Valérie Messika, founder of her namesake company, to design a jewelry piece to highlight the stone. The result? A pendant necklace set with ...

A study released in the January 2008 edition of the journal Geology proves that a blue diamond’s rare appeal goes far beyond its beauty. The study was conducted by Jeffrey Post, curator of the ...