Lab-grown diamonds grown using chemical vapor deposition (CVD) could change color for an extended period following exposure to certain light forms, Gemological Science International (GSI) has cautioned. When testing a 2-carat CVD diamond, GSI exposed the stone to high-powered ultraviolet...
Gemological Science International demonstrated ‘Live Testing’ Services at Continental Buying Group (CBG) at LAS VEGAS - International Show June 05, 2017, New York — Gemological Science International (GSI) offered its Live Testing services at the industry's most premium event...
May 17, 2017- Gemological Science International (GSI) and Lavalier Personal Jewelry Insurance announced an affinity partnership today. The Lavalier is now offering a 10% premium discount when consumers submit a grading report from GSI for jewelry they ensure at Lavalier.com....
Gemological Science International (GSI) one of the world's largest gemological organizations participates in the 2nd edition of DDES (Diamond Detection Expo & Symposium) - a two-day event which aims to provide a platform for companies offering machines, expertise& equipment for...
As reported in Diamond Digest magazine: Gemological Science International (GSI), a New York Head Quartered independent gemological laboratory that provides professional gemstone identification, grading and appraisal services to the fine jewelry industry introduces professional mobile lab equipment to India -...
Gemological Science International (GSI), a New York Head Quartered independent gemological laboratory that provides professional gemstone identification, grading and appraisal services to the fine jewelry industry introduces professional mobile lab equipment to India - Mobilab™ A breakthrough initiative and an...
The Responsible Jewellery Council (RJC) announced that Gemological Science International (GSI), a leading international gem laboratory, has achieved certification by meeting the highest ethical, social and environmental standards established by the RJC’s Member Certification system. “RJC warmly congratulates GSI on...
Gemological Science International (GSI) announced that it will donate a portion of the proceeds from its VirtualVault™ to the Jewelers for Children. “We have supported Jewelers for Children since our firm’s inception, because we believe in giving back part of...
Gemological Science International (GSI) announced today that it is making its unique diamond light analysis service, called PhotoSpeX™, available to more of its customers as of October. According to GSI President/CEO Mark Gershburg, PhotoSpeX™ was introduced at the end of...
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.
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.
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.
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.
Every GSI grading report is available on our website. Please visit gemscience.net 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.
