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Are you Gemological Institute of America, author of the books below?
Gem Reference Guide by Gemological Institute of Am... Essential Colored Stone Reference Guide by Gemological Institute of Am... Diamond Essentials by Gemological Institute of Am... Gem Reference Guide by Gemological Institute of Am... Colored Stone Essentials by Gemological Institute of Am... Jewelry Essentials by Gemological Institute of Am... The passion of Colored Gemstones by Gemological Institute of Am... The GIA Jeweler's Manual by Gemological Institute of Am... Colored Stones Book 1 by Gemological Institute of Am... Gems & Gemology 25 year index - 1981-2005 by Gemological Institute of Am...


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