GIA opens a grading laboratory in Tokyo Japan

The Gemological Institute of America (GIA) has opened a grading laboratory ‎in Tokyo, Japan, marking a ninth global location. ‎ ‎“Bringing GIA’s diamond grading standards and research-backed lab services to such an ‎important market will serve the public interest by supporting the Japanese gem and ‎jewelry industry,” said GIA’s senior vice president for laboratory and… read more »

Blue Nile’s Cheaper Diamonds Need Not Threaten Tiffany. Here’s Why.

by Dina Wang | 9:00 AM December 5, 2012 The Astors draped themselves in Tiffany diamonds; Marilyn Monroe made them “a girl’s best friend;” Audrey Hepburn’s Holly Golightly called Tiffany’s flagship New York store “the best place on earth.” But today, for a significant portion of diamond-buyers — men looking to propose — the answer… read more »

The 4 C’s of Diamond Ratings

THE 4Cs OF DIAMONDS Diamond forms under high temperature and pressure conditions that exist only about 100 miles beneath the earth’s surface. Diamond’s carbon atoms are bonded in essentially the same way in all directions. Another mineral, graphite, also contains only carbon, but its formation process and crystal structure are very different. Graphite is so… read more »

Diamond Treatments

Diamond Treatments Given the rarity and value of diamonds, it’s not surprising that some would seek ways to enhance or replicate their beauty. In recent years, diamond treatments, simulated diamonds, and laboratory-grown or synthetic diamonds have become more common, more advanced, and harder to detect. While treatments can increase a stone’s Color or Clarity, the… read more »

Le Vian Chocolate Diamonds

The term “Chocolate Diamond” is simply a marketing phrase coined by the jewelry manufacturer Le Vian. Chocolate diamonds are another type of brown, or cognac colored diamond. There are natural brown diamonds, and there are those that have been color treated. Natural colored diamonds are always going to be more expensive than those that have… read more »

Diamonds look like a rock solid investment

DIAMONDS are a girl’s best friend – and maybe an investor’s best pal too. Rocketing demand from China and India pushed up the value of large three-carat diamonds 144.9 per cent between 1999 and 2011, while five-carat gems soared 171.1 per cent. Even standard one-carat diamonds have produced an annual return of 11.6 per cent… read more »

Kay Jewelers parent sues Zale over diamond claims

Business First by Evan Weese, Web coordinator Sterling Jewelers Inc., the operator of Kay Jewelers and other stores nationwide, filed a preliminary injunction to stop a Zale Corp. (NYSE:ZLC) advertising claim that its Celebration Fire Diamond is “the most brilliant diamond in the world,” the Akron Beacon Journal reports. In the lawsuit filed last month… read more »