Charles I. Carmona, GIA Certified
Charles Carmona (3rd from left) on a panel of industry speakers at GIA Symposium 2006 in San Diego, CA



American Society of Appraisers

American Society of Appraisers (ASA); Senior Member & Past Chapter President


Charles Carmona is a GIA  certified member of Gemological Institute of America

Gemological Institute of America (GIA); Alumni Association Charter Member , GIA Certified & Past Chapter President


American Gem Trade Association

American Gem Trade Association (AGTA);
Firm Member

International Colored Gemstone Association


International Colored Gemstone Association (ICA); Member



President Gem & Mineral Council of the Natural History Museum of Los Angeles County;
Past President

Member American Numismatic Association; Member

Member Gemmological Association of Great Britain; Member

Member American MENSA Ltd; Member

Member Diamond Club West Coast (DCWC); Member


CG Poster

GIA Certified Member GIA Education Catalogue 2002 through 2005 (hardcopy /online): featured Graduate Gemologist who parlayed education into a successful business. International distribution
Member Modern Jeweler Magazine: Co-winner and scholarship recipient; Great Appraisal Challenge, a national appraisers' competition

Gemstone Weight Estimation

Gemstone Weight Estimation Handbook

This thoroughly comprehensive manual does the difficult task of estimating carat weights of mounted gemstones, calculated by their dimensions and shape, with over 300 pages of tables listed, and gemstone type.

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