GARNACHAXXI

Gübelin Gem Lab is an independent gemmological laboratory trusted by the international trade and collectors to test and identify coloured gemstones, diamonds and pearls. Drawing on more than 100 years of experience and established in 1923, the laboratory combines scientific analysis with specialist expertise to assess a gem’s identity, authenticity, possible treatments, origin and quality. Its findings help dealers, jewellers, collectors, auction houses and private clients make informed purchasing decisions with greater confidence and transparency.

The lab offers a range of services and documents, including Gemmological Reports, gemstone ratings, Gem Passports, Jewellery Passports, Gemmological Profiles and Portraits, and document verification. It also provides provenance proof, age determination, research and development, analysis and publications, and a free integrity test. Clients can place orders online, access express services and use collection centres in locations including Sri Lanka, China and the UAE. The Gübelin Gem Lab Seal identifies documents that meet the laboratory’s defined quality guidelines. Its work is supported by international industry connections and a commitment to consistent standards and professional independence.