Gemological Science International (GSI), Gemological Services, Diamond Grading Reports, Colored Gem Grading Reports, Virtual vault,GEM Web I.D, diamond appraisal, laser inscripition, grading jewelry

Gemological Science International

Gemological Laboratory, gemological services, Diamond Grading Reports, Colored Gem Grading Reports, Virtual vault, GEM Web I.D, diamond reports, diamond certification, gemological institution, pearl reports, gem certificate, gemology research, diamond certificate, diamond treatments, HPHT, High presssure high temperature treatments, synthetic diamonds, laser inscripition, diamond appraisal, gemstone appraisal, jewelry appraisal, pearl reports, colored diamond reports, international gem lab, Buying a diamond, gemology, gemological institute, gemological laboratory, international gemological information, diamond certificate, diamond grading, diamond report, gem certificate, gemological training, gemology courses, diamond grading, gemstone certification, diamond testing

Gemological Laboratory, gemological services, Diamond Grading Reports, Colored Gem Grading Reports

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About Us

    • A Unique Approach
    • Management Team
    • Affiliations
    • GSI News

Contact Us

Products/Services

    • Grading Reports
    • Metal Engraving
    • Virtual Vault™: Our Report Registry
    • Laser Inscription
    • GEM Web I.D.
    • Publications/Brochures

Tour Our Lab

    • Take In
    • Identification Numbers & Bar Codes
    • International Standard of Weight Measurement
    • Sarin Dimension & Proportion Measurement
    • Measuring Mounted Diamonds
    • Clarity Grading
    • Color Grading
    • Fluorescence
    • GEM I.D.
    • Customer Service
    • Laser Inscription
    • Metal Engraving
    • Creating your Report

The GEM Experience

    • The 4Cs in Motion
    • Scope a Diamond
    • See the Sparkle
    • Ten Commandments
    • A Diamond Bar Code
    • Love That Color!

Your Account

    • Order Online

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