The Science of Origin Determination
Автор: American Gem Trade Association - AGTA
Загружено: 2026-02-17
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2026 AGTA GemFair Tucson DYNAMIC Seminar Series Sponsored by the American Gem Society
There has been an increasing trade demand for colored stone origin determinations. Such a service requires comparison of the properties of the client gemstone to gem samples of known geographic origin. This presentation will take you through GIA’s scientific approach, from recovering reference samples at the mine to collecting advanced data in the laboratory.
Presenters: James Shigley, Distinguished Research Fellow, Gemological Institute of America, Carlsbad, California, Wim Vertriest, Manager of Field Gemology, GIA, Thailand, Dr. Aaron Palke, Gemological Institute of America, Carlsbad, California
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