Jewelry: Gems and Minerals

Guided by the ideals of education and consumer protection, Robert M. Shipley and several other leading jewelers and gemologists founded the American Gem Society in 1934. This not-for-profit trade association is comprised of fine jewelers, jewelry designers, and suppliers in the United States and Canada.

AGTA has become the voice for the colored gemstone industry. It created the AGTA Code of Ethics and Principles of Fair Business Practices and the Gemstone Information Manual (G.I.M.). The Code of Ethics (one of the first introduced in our industry) is required reading for all

Monthly meetings and popular annual show

Diamond grading

With facilities in New York, California, Bangkok, Hong Kong, Mumbai, Johannesburg, and Gaborone as well as five international service centers, the GIA Laboratory is regarded as the world’s foremost authority in gemology.

For over 30 years, IGI has provided the fine jewelry community and consumers with a broad range of services including: independent diamond grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestation of origin, laser inscription services, and diamond and colored stone courses offered through IGI's School of Gemology.