Certification Labs
Information and links to major gemstone certification laboratories.
Certification Labs
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Gemological Institute of America
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American Gem Society
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International Gemological Institute
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European Gemological Laboratory
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Gübelin Gem Lab
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Lotus Gemology
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Gem Research Swisslab
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Asian Institute of Gemological Sciences
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Asian Institute of Gemological Sciences
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International Colored Gemstone Association
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American Gemological Laboratories
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HRD Antwerp
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Antwerp Institute of Gemology Laboratory
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Hong Kong Diamond Laboratory
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Swiss Gemmological Institute
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Gem and Art Advisory
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GFCO Swiss Gem Lab
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GOJIOT Gem Laboratory
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Antwerp Laboratory for Gemstone Testing
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Dunaigre Gemological Analysis