Laboratory

The Gübelin Gem Lab is one of the world’s most respected gemmological laboratories, entrusted with testing some of the most valuable and exceptional gemstones, diamonds, pearls and jewellery. Throughout its more than 100 years of existence, the Gübelin Gem Lab has earned a reputation for integrity, scientific rigour, technological innovation and significant contributions to gemmological research.

Equipped with state-of-the-art analytical instruments and staffed by experienced specialists at all its locations, the laboratory provides objective testing of all types of gem materials, with a strong focus on coloured gemstones. Its services include treatment detection and origin determination.

The laboratory’s reports are recognised internationally for their accuracy and integrity, providing a trusted reference within the global gemstone trade. Through continuous investment in technology and expertise, the Gübelin Gem Lab upholds its founding principle: the pursuit of truth and transparency in gemmology.