Welcome to the Northwest’s School for Gemology.

Since 1978, the Northwest Gemological Institute (NGI) has offered courses in diamond grading and gem identification in a laboratory setting. Specialty classes on topical gems and our annual Northwest Jewelry Conference on period jewelry 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

© 2012-2017 Northwest Gemological Laboratory, Inc.