Useful contact information if you’re looking for a professional to value your gem or jewellery item.
GIA does not provide an appraised value for gemstones or jewellery. This service should be performed by an independent appraiser. An appraisal should contain a quality analysis, description and valuation of the gemstone or jewellery item.
While GIA does not recommend individual appraisers, there are several national appraisal associations and networks that will be able to help you locate an appraiser in your area. Many of these associations require their appraisers to have a GIA Graduate Gemmologist diploma (GG), as well as additional appraisal training. To locate an appraiser, either contact the headquarters of each association (listed below) or consult your local phone listings.
The following list is for information purposes only and does not imply endorsement by GIA.
Accredited Gemologists Association (AGA) (US only)
American Gem Society (US and Canada)
Certified Gemmologist, Certified Gemmologist Appraiser, Independent Certified Gemmologist Appraiser
American Society of Appraisers (US and International)
Master Gemmologist Appraiser
Appraisers Association of America, Inc. (US only)
Appraisers International Society (AIS) (US and International)
Accredited International Valuer, Appraisers International Society Valuer, Appraisers International Society Certified Valuer
Association of Jewellery Appraisers (UK only)
Certified Appraiser, Candidate Member
The Association of Independent Jewellery Valuers (US and International)
Canadian Gemmological Association (Canada only)
Canadian Professional Jewellery Appraising
Canadian Jewellers Association (Canada only)
Accredited Appraiser Program (AAP)
International Society of Appraisers (US and Canada only)
Certified Appraiser of Personal Property
Jewellery Appraisers Society of New Zealand (New Zealand only)
The Jewelry Judge Network (US and Canada only)
National Association of Jewelry Appraisers (US and International)
Certified Master Appraiser
National Association of Goldsmiths' Institute of Registered Valuers (UK and Republic of Ireland only)
National Council of Jewellery Valuers (Australia only)
Richard T. Liddicoat Gemological LibraryVisit the GIA Library
Contact the LibraryRichard T. Liddicoat Gemological Library and Information Center
GIA World Headquarters
The Robert Mouawad Campus
5345 Armada Drive
Carlsbad, CA 92008
Call: +1 760 603 4000
Fax: +1 760 603 4256
Cartier Rare Book Repository and ArchivesLearn more about GIA's rare book collections.
A childhood love of
gems and minerals led to the transformation of GIA's library and to a lasting reputation
Tablet to TabletLearn more about a museum exhibit that showcased rare book pages on gems, minerals and natural science.
Get the latest
Gems & gemmology
Winter 2014 issue