Organizations
List of organizations involved in the regulating of gemstone and jewelry trade, mining and dedicated to scientific study of gem materials.
Resource listing
The International Colored Gemstone Association
An independent non-profit association that was founded in 1983 to represent the international gemstone industry
www.gemstone.org
American Gem Trade Association
A group of US and Canadian professionals dedicated to promoting the natural colored gemstone and cultured pearl trade
www.agta.org