American Gemological Appraisals and Gem Lab
Whether you seek an insurance appraisal, estate inventory and or appraisal, damage evaluation, gem identification, or are looking for help regarding a new purchase or sale of a gemstone or jewelry item, AGA offers you the industry’s most advanced gemological testing, laboratory, evaluation & appraisal services. Below you will find important information about the gemological lab services available through AGA.
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Appraisals
An Appraisal is a statement as to the authenticity, quality, design & value of a piece of property, based on & supported by training, equipment & experience in the field of jewelry appraising. Appraisals are a written statement, independently & impartially prepared by a qualified appraiser, setting forth an opinion of the defined value of an adequately described property, as of a specific date, supported by the presentation & analysis of relevant market information.
Gemstone Identification and Laboratory services
NAJA Accredited Gemological Laboratory – Gemstone ID and or Verification of your existing Stone to its Report or stated Quality. Natural, HPHT and CVD Diamond, Jade, Sapphire, Ruby, Emerald and precious stones Testing Center.
Types of Services
Insurance Replacement Appraisals
Appraisals include full documentation and photographs based on the Uniform Standards of Professional Appraisal Practice (USPAP), National Association of Jewelry Appraisers (NAJA), Insurance Institute of Jewelry Appraisal (IIJA) and American Gem Society (AGS).
Jewelry and Gemstone Damage Assessment
Evaluation, documentation and representation of damaged jewelry claims, specializing in damaged diamonds and claims related damage issues.
Estate Appraisals and Probate
Appraisals include full documentation and photographs, Including all documentation of the insurance replacement appraisal & will have estate valuations based on market research, probate values & additional research. Probate Inventory is also available. We are available to work with your attorneys or accountants to ensure that you receive the proper Scope of Work to meet the requirements of your legal situation.
Credentials & Associations
Gemologists – Gemological Institute of America (GIA)
RGA – Registered Gemologist Appraiser – International School of Gemology (ISG) & Insurance Institute of Jewelry Appraisal (IIJA)
Global Claims Associate (GCA)
USPAP 2026-27
Certified Master Appraiser (CMA) – National Association of Jewelry Appraisers (NAJA)
CSMP – Jewelers of America (JA)
CPS – Cultured Pearl Association of America
American Gem Trade Association (AGTA)
Gemological Association of Great Britain (Gem-A)
Collectors Club – PCGS – Professional Coin Grading Service, NCG
