Independent Certified Gemologist Appraiser Firm | Jewelers
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Independent Certified Gemologist Appraiser Firm

To become an Independent Certified Gemologist Appraiser (ICGA), a firm must demonstrate and must continue to demonstrate an ability to abide by the Standards of the Society, to prove a high standard of business ethics and to show a genuine interest in the study of gems and appraisal methodology. The qualifications for admission to the Society as an Independent Certified Gemologist Appraiser Firm are as follows:

  • The firm must be in the appraisal business with over fifty percent (50%) of the gross revenue derived from the appraisal of gemstone jewelry;
  • The firm must have an owner or principal of the firm who is or has previously been a Certified Gemologist Appraiser, American Gem Society in good standing for a minimum of three years;
  • The firm must have been in business as an independent entity for at least two full years;
  • The firm must have made application for accreditation of an American Gem Society Accredited Gem Laboratory;
  • The firm must abstain from any advertisement, maintenance, display, or purchase of any items of jewelry or allied products for sale to the consuming public;
  • The firm must adhere to the American Gem Society Appraisal Standards;
  • The firm must have a separate, clearly defined, and dedicated space to conduct the business of the firm;

The individual must also:
Complete the Jewelers Education Foundation (JEF) course on professional appraising—Advanced Personal Property Appraiser Course (APPA) and final examination.

To learn more about membership, contact 866.805.6500 or email


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Mission Statement

The American Gem Society (AGS) is a nonprofit trade association of fine jewelry professionals dedicated to setting, maintaining and promoting the highest standards of ethical conduct and professional behavior through education, accreditation, recertification of its membership, gemological standards, and gemological research.

The Society is committed to providing educational products to inform and protect the consumer and to contributing to the betterment of the trade by creating industry standards to protect the jewelry-buying public and the fine jewelry industry as a whole.

AGS Laboratories, founded to support the AGS mission, is a nonprofit diamond grading laboratory with a mission of consumer protection. Adhering to the AGS Diamond Grading Standards, AGS Laboratories is dedicated to offering diamond grading reports that provide consistency and accuracy based on science.

American Gem Society

8881 W. Sahara Ave. Las Vegas, NV 89117 (866) 805-6500