Balzan Gem Laboratory is an independent gemology lab that has been serving the San Francisco Bay Area since 1983. Using state-of-the-art equipment, Balzan Gem Laboratory offers gem and jewelry appraisals and consultations for a wide range of needs. We provide appraisal services for many types of jewelry including diamonds, colored stones and pearls.

Other services we provide include: diamond grading, gemstone identification, jewelry repairs, consumer purchase consultation and education.

With over twenty years experience, we believe through continued education and up to the minute market evaluation that we can offer the most accurate appraisals with the professionalism and experience you deserve. Our goal is to offer exceptional quality, service and experience.