GRS Gemresearch Swisslab AG

Founded in 1996 by Dr. Adolf Peretti, GRS research has focused principally on the identification and characterization of high-quality gemstones from newly discovered mines, as well as determination of origin for gems derived from classic mining regions. The next area of research focuses on the identification of gemstone imitations, synthetics and new gem treatments. Our final area of expertise specializes in color grading and gemstone color branding, such as the well-known GRS-type Pigeon’s Blood and GRS-type Royal Blue.
GRS Laboratories pledges to make its results transparent to the public through works published in specialized trade journals, GRS’s proprietary publication series «Contributions to Gemmology», producing documentaries and hosting seminars at trade shows and other industry events. The key competence pillars of GRS can be classified into treatment detection, treatment classification, origin determination and color terminology.