Free OVERNIGHT Shipping! Any Purchase – No Minimum (see shipping details)

(800) 527-8029

Gemological Science International (GSI)

Gemological Science International (GSI)

GSI is an independent gemological laboratory based in the heart of New York City's Diamond District with additional offices in diamond centers around the world.

GSI offers gemstone identification, grading and appraisal services exclusively to the fine jewelry industry.

The lab's business model is built on integrity, innovation, professional service and shared research education.

 

The information entered on this form will not be used to send unsolicited email and will not be shared with a third party.

Thank You!

Your email has been sent.


Close