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Office Hours: Monday – Friday 8:30 – 4:00 Saturday & Sunday Closed This site uses Adobe Acrobat Celebrating our 30th anniversary in 2008	Welcome to the Northwest's leading independent appraiser of fine jewelry and school of gemology! Northwest Gemological Laboratory, Inc. (NGL) is the Pacific Northwest's leading independent appraiser of fine jewelry and gemstones, with state-of-the-art facilities in Bellevue, Washington. Our Graduate Gemologists adhere to the highest gemological standards in the industry, without ethical compromise. Northwest Gemological Institute (NGI) was established in 1978 to instruct local jewelers in the art and science of diamond grading and gemstone identification. Since that time, NGI has expanded its curriculum into areas of interest not only to the jewelry industry, but consumers as well. With small classes taught by regional experts, NGI offers a unique brand of hands-on education at its facilities in Bellevue, Washington, U.S.A. Check out NGL's recent appearances on KOMO! Home | Lab | School |  Appraisals | Appraisal Rates | Registration | Directions Newsletter | Archives | Contact | Library | Selling your jewelry?