Enter your GTC report number below to instantly authenticate your gemstone or rudraksha laboratory certificate.
Three simple steps to confirm the authenticity of your GTC laboratory certificate.
Locate the unique Report Number printed on your GTC certificate. It begins with GT, RD, GC or AA.
Type your report number in the search box above and press Verify. Our system instantly searches the database.
Your certificate particulars — weight, colour, shape, test results and final identification — are displayed in full detail.
GTC — Gem Testing Center is a professional gemological and rudraksha testing facility based in Delhi. We issue scientifically verified reports using advanced optical, physical, and X-ray examination methods — ensuring every certificate reflects accurate, unbiased analysis.