We are a not-for-profit membership association dedicated to the long-term stability and integrity of the natural-colored gemstones, natural Pearls, and cultured Pearls industries.

Our Mission
Highest Ethical Standards
Transparency and Integrity
AGTA Gemstone Information Manual
Industry information guide for natural gemstones, enhanced natural gemstones and man-made stones including care & handling recommendations.

Dedicated To Serve Our Community
Meet the driving force behind our organization – our passionate staff, dedicated board of directors, and expert committees. Comprised of industry leaders and visionaries, they bring invaluable expertise and guidance to our mission. Get to know the faces behind our success and learn how they’re shaping the future of our organization.
OUR OBJECTIVES
We are devoted to...
Represent
Promote
Protect
Create
Educate
A Visionary Movement In History
Formation
Show Time
AGTA Source Directory
AGTA Spectrum Awards®
Gemstone Information Manual
Tucson Convention Center
AGTA Cutting Edge Awards
JCK Las Vegas
Gemological Testing Center
Leon Ritzler Award
Membership Expansion
Tanzanite Birthstone
Code of Ethics Enhancement
Spinel Birthstone
Educational Fund
Rio Grande Partnership
Colorado School of Mines Study
AGTA Foundation
Today - The Authority in Color
The Leon Ritzler Honorary Member Award
Established to honor Leon Ritzler, the association’s inaugural president, this award recognizes individuals who have made significant contributions to the advancement of the natural colored gemstones, natural Pearls, and cultured Pearls industry. Over the years, many distinguished figures have been honored with this award, including renowned gemologists, industry leaders, and pioneers.
1982 Dr. Edward Gubelin
1983 Paul Desautels
1983 Richard T Liddicoat Jr.
1984 Herman Bank
1985 Eunice Miles
1986 Orlando Paddock
1986 Robert Crowningshield
1987 William F. Preston Jr.
1988 Bert Krashes
1990 Harold & Erica Van Pelt
1991 Maureen E. Jones
1992 John Sinkankas
1994 William E Boyajian
1995 David Federman
1996 Bernd Munsteiner
1997 Kurt Nassau
1998 Alice Keller
1999 Jeffrey Post
2003 Maurice Shire
2006 Tucson Gem & Mineral Society Inc
2007 Douglas K. Hucker
2010 Alan Hodgkinson
2013 Richard Krementz
2014 Ray Zajicek
2014 Roland Naftule
2015 Owen Bordelon
2016 Charlotte Preston
2017 John Parrish
2017 Richard Greenwood
2019 David Brackna
2023 Shelly Sergent
Buy With Confidence
Sell With Confidence
