Gem Reference Guide
Gemological Institute of America
270 pages, Unknown Binding
ISBN: 0873110196
ISBN13:
Language: English
Publish: January 1, 1988
For the GIA Colored Stones Gem Identification and Colored Stone Grading Courses.
Gemological Institute of America
270 pages, Unknown Binding
ISBN: 0873110196
ISBN13:
Language: English
Publish: January 1, 1988
For the GIA Colored Stones Gem Identification and Colored Stone Grading Courses.