1 (650) 344-9535 | 100 S. Ellsworth Avenue, Suite 607, San Mateo, CA 94401



Christensen & Rafferty Fine Jewelry is proud to have co-owner Diane Christensen as our in-house appraiser.  Diane has over forty years of broad experience in the jewelry industry as well as holding a Graduate Gemologist (GG) title from the Gemological Institute of America (GIA) and a Certified Gemologist Appraiser (CGA) title from the American Gem Society.  Diane is assisted by an experienced staff of two Registered Jewelers (RJ) title holders from the American Gem Society: Joy Christensen Rudkin and Marcia Bianchini.

Gemological Institute of America

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