GemID: Gem Identifier

Identify gemstones like a professional.

GemID guides you through systematic gemstone identification using the same optical and physical properties professional gemologists rely on — refractive index, specific gravity, fluorescence, pleochroism, and more.

119 gems in the database From common stones like quartz and topaz to rare collector gems like alexandrite, tanzanite, and demantoid garnet.

Instrument test guidance Step-by-step guidance for refractometer, polariscope, spectroscope, UV lamp, and specific gravity testing. Know what to look for and what it means.

Origin & treatment testing (Pro) Two-phase testing workflow helps identify natural vs. lab-grown stones and detect common treatments like heat, fracture filling, and beryllium diffusion.

Collection management Save identified stones to profiles, track acquisition details, and export professional examination records.

Built for gemologists, jewelers, appraisers, and serious collectors. GemID documents your examination process — it does not replace a certified gemological laboratory.