Gemological Science International (GSI) today announced it has received its ISO 17025 and DAC – REQ – 01 accreditation in Dubai, making it the first-ever, international gemological organization to do so in that country. ISO/IEC 17025 was first issued in…
GSI was the first in the world to begin testing of smaller size diamonds in bulk and has never looked back since – Mark Gershburg
Mr. Mark Gershburg in an exclusive interview with Rough & Polished – Team Asia and Russia. With more than 30 years of experience in the gem lab sector under his belt, Mark Gershburg is an industry veteran widely popular in…
New York, NY – Gemological Science International (GSI), one of the world’s leading gemological institutions, today announced it has expanded its’ synthetic testing services for finished diamond jewelry to Hong Kong, India, New York and Dubai. This service is offered…
GSI’s ‘Successful American Strategies – Retail Vision 2020’ – receives accolade among trade professionals
Dubai, 12 September — Gemological Science International (GSI) presented a breakfast seminar on ‘Successful American Retail Strategies’. The seminar was presented in collaboration with Preferred Jewelers. Andie Weinman, Founder of Preferred Jewelers addressed the select crowd on Proven Successful American…
Mr. Mark Gershburg, Founder- GSI, in an exclusive interview with The New Jeweller Group – *Dear Mr. Mark, According to you how important is “Education” for the gems and jewelry industry members, especially in a competitive environment that the…
Gemological Science International demonstrated ‘Live Testing’ Services at Continental Buying Group (CBG) at LAS VEGAS – International Show
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 most premium event…
GSI Helps You Understand the 4Cs of Diamonds and More… Hosts workshops at IIJS Signature 2013, Mumbai
GSI hosted a workshop at the IIJS Signature 2013 show to further understanding of the 4Cs in diamond appraisal.
💎 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.