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Alexandrite

Tsarstone collectors guide

laboratory

11. European Gemological Laboratory
As a member of the EGL USA Group, European Gemological Laboratory (EGL) is a full-service lab and offers a comprehensive array of gem identification, evaluation reports including customized reports of identification for rough and polished diamonds as well
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12. The Russian MSU Gemological Center
Found at 1995, MSU Gemological Center is a part of MSU Department of Geology and co-founders of the Russian Gemological Society (2000), the Union of Modern and Antique Jewelry Appraisers, and member of the Russian Diamond Chamber.
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13. GemResearch Swisslab
Private gemological research company focused on the characterization of high-quality gems from newly opened mines.
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