American Institute of Gemological Research, Inc.

independent jewelry appraisers serving the Denver metro area

Schedule an appraisal:     303-420-2369  •  888-420-2369  •

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Welcome to AIGR  

Do you want to know how much your jewelry is worth before you sell it?

Have you bought gems or jewelry online and need expert verification that you bought what was advertised?

Did you inherit jewelry and need to know its value?

Have you purchased an item from an unfamiliar jeweler or pawn shop?

Are you a jeweler who needs grading reports for your gemstones?

The American Institute of Gemological Research (AIGR), Inc., is an independent gem lab serving the Denver metropolitan area and Colorado front range. Our experienced appraisers will evaluate your jewelry and provide printed appraisals. (Please see the samples on the Jewelry Appraisals page.) Appraisals will be performed by gemologists who have graduated from the Gemological Institute of America, and we guarantee that the appraisals will be accepted by your insurance company.

We are here to help.

Please call us at 303-420-2369 or 888-420-2369 or e-mail us at to schedule an appointment at one of our locations. We have appointments available Tuesday through Saturday.

You can also schedule an appointment with an AIGR gemologist at an appraisal clinic held at a local jewelry store by calling the number listed here for the store closest to you.

Since January of 2000, AIGR gemologists have performed more than 32,000 appraisals.  AIGR has served clients from states shown in red.

© 2018 AIGR, Inc. Last update: November 30, 2017