For more information on gemstones and jewelry in general, these are some on-line resources that are available and valuable:

American Gem Trade Association (AGTA)

Gemological Institute of America (GIA)

The Gemmological Association of Great Britain (Gem-A)

The World Jewellery Confederation (CIBJO)

Jewelers Vigilance Committee (JVC)

American Gem Society (AGS)

U.S. Federal Trade Commission

OECD Due Diligence Guidance for Responsible Supply Chains of Minerals
from Conflict Affected & High Risk Areas

UNICRI - United Nations Inter-regional Crime & Justice Research Institute

The Jewelers Board of Trade® is the only organization dedicated solely to providing credit reporting, collections and marketing services to the jewelry industry. Our database of over 70,000 jewelry industry-related businesses provides JBT members with the latest information to support their credit decision processes.


Read Related Gems

About Us

The ICA is a worldwide body specifically created to benefit the global colored gemstone industry by advancing and promoting the knowledge and appreciation of colored gemstones.
New York Office: 31 West 47th St., Suite 1103, New York, NY 10036
+1 (212) 620-0900
ica (at)
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