There are a lot of gemological laboratories in the diamond grading industry. While many of them use only hands and eyes in the grading process, Gemological Science International has enhanced this process by adding advanced technology and intelligent software. Proprietary software is at the heart of GSI’s diamond grading process, and modern technologies reduce the chance of human error. Professional Service, and Research & Education, which distinguishes this laboratory from many others.
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Our new location address:

581 Fifth Ave 4th Floor NY, New York, New York, 10017, United States