Welcome to the Northwest’s School for Gemology.

Since 1978, the Northwest Gemological Institute (NGI) has offered hands on 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 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.