North American Gemological Laboratory (NAGL) is one of the nation's leading providers of jewelry appraisals and diamond/gemstone grading.


NAGL has been serving the public and the jewelry industry internationally, since 1998. All our jewelry services can be completed while you wait and watch. Appointments generally take about 30 to 45 minutes for a single item. Our GIA certified Graduate Gemologists will thoroughly examine your item and provide an appraisal document that you will take away with you the same day.


Our company strives to provide extraordinary service, high quality jewelry appraisals and reports that are prepared with integrity, accuracy and a commitment to ethical business practices. All gemologists on staff are GIA Graduate Gemologists with a majority having several years experience working as Staff Gemologists for the GIA Gem Trade Laboratory in Carlsbad, CA.


Please call our office to schedule an appointment, or for shipping instructions for items being mailed to our office.


We appreciate your Business!