to the Northwest's first and foremost
appraiser of fine jewelry.

Northwest Gemological Laboratory is the consumer's advocate, serving the public directly and through jewelers nationwide since 1978. Our Graduate Gemologists adhere to the highest standards in the industry without ethical compromise.


to the Northwest's School for Gemology.

Since 1978, the Northwest Gemological Institute has offered courses in diamond grading and gem identification in a laboratory setting. Specialty classes from simple gems to antique jewelery add recognized experts to our own brand of hands-on, small group instruction open to both the trade and public.

Phone: 425.455.0985 | Fax: 425.454.3088 | Office: 10801 Main Street Suite 105 Bellevue, WA 98004
Office Hours: Monday-Thursday 8:30am - 4:00pm, Friday 8:30am - 3:30pm, Closed Saturday and Sunday

© 2012-2018 Northwest Gemological Laboratory, Inc.