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2020 AGA
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Continuing Education

We encourage you to enhance your experience and knowledge through taking classes. We recommend that you take ASA, GIA, AGS, ISA and NAJA workshops all through the year to accomplish this.

AGA strives to offer two educational conferences per year. One in Tucson during the Gem and Mineral Show at the beginning of each year and one in Las Vegas during JCK mid-year.

Meet the leaders. Enrich your knowledge of gemology and gem trade issues by exchanging information with a diverse range of professionals. We've met with gemstone treaters, crystal growers, enhancement detection specialists, designer gem cutters, the trade press, gem instrument developers, computer technology specialists, domestic and international traders and the FTC.

Certified Gem Lab

AGA Members can achieve certification by fulfilling the highest equipment standards and compliance with the AGA code of ethics. (Gem Lab Certification information.)

AGA Designation Materials for Voting Members

Identify and promote your image as a dedicated, ethical and professional gemologist using the following items.

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AGA Membership

Accredited Gemologists Association is a professional peer society providing a network for sharing gemological information and skills. AGA proudly counts some of the world’s leading gemologists as members and is internationally respected as a premier gemological organization.

As an AGA member, you gain:

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An Opportunity to support AGA's Mission – become an AGA Sponsor or Donor

AGA is a nonprofit 501(C)(3) organization dedicated to promoting the highest standards in Gemological Education, Research, and Ethics. Your donation will allow AGA to provide Gemological Education Scholarships, Fund Gemological Research Projects, and expand our Positive Roles in the world of Gemology.

Read more about becoming an AGA sponsor or donor…

Please consider supporting these donors as they support the mission of AGA:

  • Steve Wexler, Wexler Insurance Co.
  • Center for Curiosity, Kushal Sacheti & Galaxy USA Inc.
  • Art Samuels,
  • Mark Cullinan, Cullinan Diamonds

About the AGA Gemological Research Grant…

About the AGA Gemology Scholarship Program…

About the Accredited Gemologists Association

Established in 1974, AGA was envisioned as a network for sharing gemological information and skills. The international Accredited Gemologists Association of today proudly counts among our members some of the world’s leading independent gemologists.

The AGA is an independent, international, nonprofit organization dedicated to…

Gemological Education & Research
Identification & Evaluation of Gem Materials
Development of Professional Standards of Analysis, Practice & Ethics

We are an organization of all beliefs and cultures and share a common bond of the love of gemstones. AGA believes in excellence and is dedicated to establishing the highest professional standards of practice.

The annual AGA Board Meeting is held the day before the Tucson AGA Conference, while the annual AGA Membership Meeting is held the day of the Tucson AGA Conference. Both events are held in the same facility as the AGA Conference.

For more details about our organization, please view the following organizational documents. (.pdf files)

Voting Membership is available to anyone holding an acceptable credential from the Gemological Institute of America, Gemmological Association of Great Britain, Canadian Gemmological Association, or other school of gemology as approved by the AGA Board of Governors. Non-voting memberships are available to others as Associates, Students, or Corporations.

Officers & Board of Governors for 2/2020–2/2023


President: Teri Brossmer, GG, MGA®
Vice President: Ted Irwin, GG, ICGA
Secretary: Heidi Harders, GG
Treasurer: Adam Ostrow, GG
Immediate Past President: Stuart Robertson, GG

Board of Governors

Gina D'Onofrio, FGA, FGAA, MGA®
Donna Hawrelko, FGA, FCGmA
Richard Hughes, FGA
Çiğdem Lüle, PhD, FGA, GG (GIA), DGA
Raymond Mason, GG
Antoinette Matlins, PG, FGA


Educational Standards and Outside Association Relationship Committee: Donna Hawrelko
Conference Committee: Çiğdem Lüle & Donna Hawrelko, with Antoinette Matlins, Gary Smith, Craig Lynch, Raymond Mason, Art Samuels, & Patti Schrag
Certified Gemological Laboratory Committee: Gary Smith & Richard Hughes
Membership Committee: Renee Newman
Bonanno Award Committee: Stuart Robertson, with former Bonanno Award recipients Christopher Smith, Richard Hughes & Shane McClure
Sponsorship Committee: Teri Brossmer, with Art Samuels
Education Scholarship & Research Grants Committee: Heidi Harders, with Breanne Avender, Jane Chaikowsky & Çiğdem Lüle

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