The Gemological Appraisal Laboratory of America is a diamond and jewelry appraisal service located in the NYC Diamond District, offering accurate and unbiased evaluations.

For over 30 YEARS, GAL and its staff of expert Gemologists have built its reputation as one of the leaders in the industry. Our appraisals and lab reports are recognized worldwide by retailers, private jewelers, wholesalers, and insurance companies.

We offer a number of appraisals and comprehensive laboratory services to suit any of your needs. All of our Gemologists are graduates of the Gemological Institute of America…

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The Gemological Appraisal Laboratory of America, Inc. (GAL) is a reputable and independent jewelry appraisal and gemological services company.

Whether you need a gem appraisal, evaluation, photograph or analysis, GemLab’s expert gemologists will provide accurate and quality reports you can count on.

Quick answers to the most frequently asked questions about GemLab’s location, process and services.


Very knowledgeable, friendly, and easy to deal with. Since they don't sell any jewelry themselves, I felt comfortable relying on their opinion.–S. Steven, Customer

What a place! This family-owned business is truly a remarkable gift to the Diamond District. There is not enough space to write how FAN-tabulous and helpful everyone is.–D. Spencer, Customer

Wow! What a neat place! Everyone is friendly, professional, and totally helpful. We will definitely recommend Gem Lab to all our friends, family, and coworkers who need their jewelry appraised. Josh is very down-to-earth and taught us about diamonds.–Adam H., Customer