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.
Learn more about some of the most well-known diamond grading laboratories HERE »
Only one email recipient may be specified.
The information entered on this form will not be used to send unsolicited email and will not be shared with a third party.
Your email has been sent.
At Jared we offer a full line of services - custom design, expert repair and exclusive in-store events.
View all Jared Services
Give the perfect gift that always fits.
Purchase a Gift Card
Sign up for email updates to be the first to know when we have special offerings.