About

About GIS

Gem Research Institute of Switzerland

GIS (Gem Research Institute of Switzerland) is an independent gemological laboratory dedicated to gemstone identification, grading, and scientific research in crystal materials. Serving clients worldwide, GIS provides reliable, transparent, and science-based gemological services.

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OUR SERVICES

GEM REPORTS & SERVICES

Diamond

DIAMOND

Identification • Grading • Quality Assessment

Professional laboratory services for natural and laboratory-grown diamonds.

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Colored Gemstones

COLORED GEMSTONES

Identification • Grading • Treatment Analysis

Comprehensive testing and grading for natural and laboratory-grown colored gemstones.

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Crystal Materials

CRYSTAL MATERIALS

Identification • Characterization • Materials Analysis

Advanced analytical services for crystal materials and related research.

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VERIFY REPORT

Please input the report number in the top-right corner of your report.

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