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1. |
Adamas Gemological Laboratory
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Provides technical and gemological appraisal and consulting services to the trade and the public. Services, articles, and links.
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American Gem Society Laboratories
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Provides diamond grading services featuring grading of the diamond cut.
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European Gemological Laboratory USA
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Provides diamond, colored stone and pearls certification, analysis and consultations for the jewelry trade. Produces educational and promotional materials.
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GemLab
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Specializes in origin of color determination for fancy colored diamonds using Raman spectrometer. Offers diamond grading reports and appraisal services.
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GemResearch Swisslab
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Determination of the authenticity and country of origin of a rubies and sapphires. Offers gemstone reports and inscriptions.
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GIA Gem Trade Laboratory
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Provides grading and identification of diamonds, colored stones or pearls for the industry and consumers.
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Global Gemological Laboratory
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Offers mini and full diamond grading reports and appraisals for the trade. Located in Bellevue, Washington
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Gubelin Gemmological Laboratories
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Independent service provides general information on gemstones, ongoing research and lab report services.
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New England Gemological Laboratory and Appraisal Services, LLC
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Fine jewelry appraisals by an independent team. Services, price list, and location map. In Manchester, CT.
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10. |
Realgems Gemological Laboratory
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Technical advisers, appraisers, gemological training. Services, background, and contact information. Located in Brazil.
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Russian Gemological Server
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Offers gemstone analysis software, gemological education, and gemological laboratory services. Includes articles on diamond cut studies and a gallery of virtual diamond images.
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SSEF Swiss Gemmological Institute
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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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13. |
Gemmological Association and Gem Testing Laboratory of Great Britain
NEW!
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Offers gem grading and identification services and gemmological courses for the trade and members.
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