GSI BECOMES FIRST GEMOLOGICAL LABORATORY TO JOIN THE PLUMB CLUB – READ | AS SEEN IN JEWELLERY BUSINESS – DIAMONDS: WHAT’S YOUR TYPE (BY ALETHEA INNS)READ | NATURAL SELECTION: AN ARTICLE BY RAPAPORT ON DIAMOND-VERIFICATION SERVICES FOR UNDISCLOSED LAB-GROWN AND TREATED STONES – READ | GEMOLOGICAL SCIENCE INTERNATIONAL ACHIEVES GLOBAL ACCREDITATION AS VERIFIER OF SUSTAINABILITY RATED DIAMONDS – READ

GSI Grading Reports

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We at GSI have a vision: to create a modern, state-of-the-art diamond grading lab that takes advantage of the latest breakthroughs in diamond grading. To do this, we reengineered the diamond grading process and founded it on foolproof cutting-edge technology and automation.

Laboratory Services

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The GSI laboratory is the genesis of GSI’s success. All that GSI is and all that it has accomplished started there. As the only major gem lab established in the 21st century, GSI is uniquely equipped to address continually emerging and accelerating industry challenges.

Learn More About GSI Laboratory Services

Education

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GSI firmly believes that trade and consumer education is critical to the long-term success of the diamond and jewelry industry. It also uses industry connections to promote communication and education programs for both the trade and consumers.

Learn More About GSI Education

Research

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GSI’s research department is at the forefront of the rapidly changing processes related to treatments of diamonds and gemstones, synthetic technologies, and many others. GSI openly shares research findings with others in the trade.

Learn More About GSI Research

Verify Your Report

GSI grading reports are an objective and accurate analysis of a diamond’s 4Cs and more. They can be accessed any time from our secure database – a key benefit should you ever misplace it or its authenticity is questioned. Our efforts have resulted in grading certificates that give your peace of mind when making that most important purchase.

Virtual Vault

Virtual Vault ™ is an innovative new consumer security service created by Gemological Science International (GSI) to protect your GSI Grading Report – providing permanent storage of your Grading Report (GSI Certificate). It guarantees you anytime access to its contents and other important benefits.

About GSI

We at GSI have a vision: to create a modern, state-of-the-art diamond grading lab that takes advantage of the latest breakthroughs in diamond grading. To do this, we reengineered the diamond grading process and founded it on foolproof cutting-edge technology and automation Proprietary software is at the heart of GSI’s diamond grading process.

GSI's Latest Press

GSI Becomes the First Gemological Laboratory to Join The Plumb Club

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Gemological Science International (GSI), one of the largest gemological organizations in the world, announced today its new membership in The Plumb Club, becoming the first-ever gemological laboratory to be invited to join the prestigious organization.

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Diamonds- What’s Your type? (Featured in Jewellery Business Magazine

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Human beings love to classify and categorize items—and for good reason! This type of organization helps us better understand common attributes of things and simplify complex data. Gemstones, of course, are no different.

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Natural Selection: An Article by Rapaport on Diamond-Verification Services...

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With the rise of undisclosed lab-grown and treated stones, jewelers are turning to diamond-verification services to avoid misleading their customers – they’re trusting the seller to offer them an authentic product that comes from the earth.

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The Four Pillars

The Four Pillars of GSI’s philosophy are – Integrity, Innovation, Professional Gem Service Laboratory, and Research & Education. There is a commitment to excellence and integrity throughout everything we do and everywhere we operate.

Our Management Team

GSI is built on the foundation of a management team that is both knowledgeable and trustworthy. The leading members of our management team – Debbie Azar and Mark Gershburg – have in excess of 30 years experience between them.

GSI Affiliations

GSI and its executives support and actively participate in leading industry organizations from all over the world. Jewelers Vigil and Committee, Jewelers Security Alliance, Responsible Jewelry Council, Israeli Diamond Exchange are just a few.