GSI Diamond Certification-usa


Gemological Science International (GSI) announced today that the Emirates International Accreditation Centre (EIAC) approved GSI’s Dubai laboratory accreditation. The accreditation is valid not only in Dubai where the GSI laboratory is located, but in all seven United Arab Emirates.  GSI...

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GSI To Host Day Long Free Jewelry Design Workshop at Center Of Excellence Gem & Jewelry Institute Kolhapur

Gemological Science International (GSI) will host a free jewelry design workshop at Centre of Excellence Gem & Jewellery Institute at Kolhapur. Available exclusively to students, thought courses, practical techniques for jewelry design including drafting, shading, design theory, and how to...

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GSI Expands Lab-Grown Diamond / Diamond Jewelry Screening & Testing Services With Opening of New Office in New York’s Diamond District

GSI announced today the opening of its new facility in the heart of New York City’s 47th Street ‘Diamond District’ that will be dedicated solely to screening and testing of diamond jewelry for undisclosed lab-grown diamonds. “Demand for screening and...

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GSI To Host Free Jewelry Design Workshops During IIJS Show 2018

Gemological Science International (GSI) is hosting a series of introductory, jewelry design workshops during the 2018 IIJS Show from Thursday, August 8 th through Monday, August 13 th at booth numbers 2C007, 2C009, 2D008 & 2D010. The free workshops will...

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Where is Gemological Science International (GSI) located?

GSI is headquartered in New York, NY. It has 13 laboratories on four continents and in a number of countries: the United States, India, Dubai, Israel, Belgium, Hong Kong, and Botswana. This makes GSI one of the largest independent gemological organizations in the world.

Is there a difference between grading reports issued by different GSI laboratories?

All GSI laboratories grade using the same methods and adhere to the same standards. Every laboratory is staffed with highly trained professionals who have years of grading experience and an extensive gemological background.

What does it mean when a sales associate tells me my diamond is “GSI Certified” or is accompanied by a “GSI Certificate”?

The phrases “GSI Certificate” and “GSI Certified” are industry shorthand for GSI grading or identification reports. What this means to you is that expert gemologists and trained professionals meticulously evaluated the item. When your diamond, jewelry or gemstone is accompanied by a GSI grading report, you can be completely confident in the accuracy and objectivity of the evaluation.

Where can I find “GSI Certified Diamonds”?

GSI diamond grading and identification reports can be found in jewelry stores worldwide and online. Insist on a GSI grading report when shopping for a diamond, jewelry or gemstone.

What do I do if I lose my GSI Diamond Report?

Every GSI grading report is available on our website. Please visit and go to “verify your report”. Enter your GSI report number and you’ll instantly have access to a digital copy of it. You can also email us through the website to request a copy.

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