ISG Research Report Links
Below are links to selected gemstone research reports by the International School of Gemology. We invite you to review this information and send any updates or additional information you may have. Please note that some of these reports will require Adobe Reader 7.0 or higher to view as PDF formatted documents.
Dyefusion of Gemstones Part 3
requires Adobe Reader 7.0 or higher
Read Only edition
Dyefusion of Gemstones (pdf link)
Diffused Andesine Reports
Andesine: The Final, Final Chapter (pdf file link requires Reader 7.0 or higher)
Andesine: The Final Chapter (pdf file Link)
Paraiba Tourmaline Reports
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