OUR SERVICES
APPRAISALS
Get comprehensive jewelry appraisal services from Los Angeles’ trusted GIA-certified gemologists at Superior Gemological Laboratory. Our experts provide unbiased valuations for diamonds, gemstones, gold, and designer jewelry, ensuring your pieces are accurately evaluated for insurance coverage, estate planning, or resale. Each appraisal is performed with state-of-the-art equipment and strict adherence to industry standards.
Distinct from many local labs, SGL never buys or sells jewelry—guaranteeing impartial, conflict-free assessments every time. Our proprietary GemRap system assigns each report a unique number and secure online access code, allowing you and authorized parties to view detailed valuation documents, loss claim support, and multi-angle images 24/7. Protect your most valuable items by choosing a jewelry appraisal service recognized for its reliability, discretion, and expertise in downtown Los Angeles.
AUTHENTICATION CERTIFICATES
Protect your investment with accurate diamond certificates and gemstone grading, recognized by major insurers and jewelers across California. SGL’s expert team assigns unique report numbers and access codes, so every certificate is digitally available, including multi-angle images and 360° animation.
GEM IDENTIFICATION
Our advanced gem identification services help you verify the authenticity and quality of all precious stones. Using cutting-edge technology and proven gemological science, SGL ensures fast, precise identification for jewelers, collectors, and clients throughout Los Angeles and Southern California.
GEM INSPECTION
For clients needing detailed jewelry and gemstone documentation, Superior Gemological Laboratory offers exhaustive inspection reports that are recognized by insurance companies, legal teams, government agencies, and private collectors. Each inspection includes laser inscription imagery, clarity analysis, and professional remarks on stone condition, with findings delivered both via hard copy and secure online portal.
Insurance carriers and claimants particularly benefit from our stringent reporting standards—providing the information needed for loss claims, damage assessments, or resale compliance. Our inspection process excludes purchasing or selling jewelry, ensuring objective evaluations every time. Whether you represent a legal practice, operate a retail business, or are an individual protecting your investments, SGL delivers trusted, unbiased gemstone inspections in the heart of Los Angeles.
