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International Gemological Institute has Diamond Grading Diamond Grading Report Diamond Grading Laboratory Diamond Certification Diamond Certification Course ...
Colored Stone Evaluation  Colored Stone Grading Report  Gem & Jewelry Appraisal 
www.igiworldwide.com - 2009-02-07
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Ancient gem studies - gem archaeology, gemology, scientific analysis, provenance, gem origin, ancient glyptic art and lapidary technology.
gem archaeometry  gem enhancement  intaglio cameo 
ancient-gems.lthoresen.com - 2009-04-13
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On Gemstones: Gemological and Analytical Studies on Ancient Intaglios and Cameos, ed. Lisbet Thoresen
on-gemstones.lthoresen.com - 2009-04-09
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The SSEF Swiss Gemmological Institute is an independent, international, non-profit organisation dedicated to the identification of gemstones, gemstone ...
gemstone reports  gemstone research  Swiss gemmological  Swiss gemological  treatment identification 
www.ssef.ch - 2009-03-08
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glyptic art
gem
gemology
archaeometry
diamonds
gem identification
gem engraving
jewelry
diamond cutting
gems
ancient gem
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