GRS GemResearch Swisslab AG is a private independent gemological research laboratory specialized on the issuance of origin and authenticity reports on rubies, sapphires and emeralds as well as other important coloured gems including spinel, tourmalines, garnets and jade.

The research laboratory is highly equipped to identify today's advanced treatments. Regular trips to most important mines in the world are presented in documentaries and our own book series "Contributions to Gemology".

GRS is specialized in analyzing and other colored gemstones Rubies Sapphires Emeralds Spinels Paraiba Tourmalines

GRS research activities / publications Books "Contributions to Gemology" Mine Expeditions & Documentaries In-house high tech analysis Issuance of gemstones reports