First Diamond Group's Diamond Enhancing Laboratories in Tel Aviv recently announced a new laser treatment. The treatment was discovered at the...

You say heated, and I say treated. AGTA calls it enhanced, GE calls it processed. Gem identification is becoming a study in semantics. If you take a...

JCK asked June Wallach, vice president of Consumer Trends at Roper Research, New York City, and Robert Marske, special assistant for the economic...

An international certification system for rough diamonds-the industry's proposed solution to the "conflict diamond" issue-is one step closer. ...

Go to www.census.gov. Next to Business, click on Economic Census. Under Geographic Area...

One of the many complexities of the "conflict diamond" issue is tracking not only where diamonds are from but also where they are "laundered." ...

As part of its new "supplier of choice" initiative, De Beers recently sent out a questionnaire to its sightholders, but many are unhappy about its...