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SSEF Swiss Gemmological Institute (Popularity:  )
http://www.ssef.ch/
An independent, international, non-profit organisation dedicated to the identification, treatment, and origin. Services, education, and contact information. Located in Switzerland.
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New England Gemological Laboratory and Appraisal Services, LLC (Popularity: )
http://www.negemlab.com
Fine jewelry appraisals by an independent team. Services, price list, and location map. In Manchester, CT.
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American Gem Society Laboratories (Popularity: )
http://www.agslab.com/
Provides diamond grading services featuring grading of the diamond cut.
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Russian Gemological Server (Popularity: )
http://www.gemology.ru/
Offers gemstone analysis software, gemological education, and gemological laboratory services. Includes articles on diamond cut studies and a gallery of ...
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Global Gemological Laboratory (Popularity: )
http://www.globalgemlab.com/
Offers mini and full diamond grading reports and appraisals for the trade. Located in Bellevue, Washington
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European Gemological Laboratory USA (Popularity: )
http://www.eglusa.com
Provides diamond, colored stone and pearls certification, analysis and consultations for the jewelry trade. Produces educational and promotional materials.
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GemResearch Swisslab (Popularity: )
http://www.gemresearch.ch
Determination of the authenticity and country of origin of a rubies and sapphires. Offers gemstone reports and inscriptions.
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