GIA Essential Colored Stones Reference Guide 1999 Gemological Institute America

GIA Diamonds vol II 2 Textbook 1971 ??Gemological Institute of America Manual

GIA Essential Jewelry Reference Guide

GIA Diamonds book lot vol II 2 Textbook 1971 Gemological Institute Manual famous

GIA Colored Stone Grading Course Lab Manual 1994 Charts 1997

GIA Gem Identification Lab Manual 1992