Passepartout, VPN Client
GRATUIT
Free
Description
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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.
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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.
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What's new (v1.10.2)
New Features
- Quick ID mode — observable-only identification for beginners (no instruments required)
- "What Test Next?" drill question type — trains users on test sequencing
- Confusion pair drill mode — focus practice on commonly confused gems (130 gems enriched with confusedWith pairs)
- Gem-A FGA Section D exam simulator — partial credit scoring, constants sheet, strike system
- FEEG 12-stone European Gemmologist exam simulator
- Half-exam options for Gem-A (6 stones, 1h35m) and FEEG (6 stones, 2h15m)
- Exam readiness score — tracks preparedness before attempting mock exams
- Guided onboarding walkthrough — interactive Ruby identification that teaches the workflow step-by-step
- Exam study guide pages — static web pages for GIA, Gem-A, and FEEG prep
- Quick ID mode — observable-only identification for beginners (no instruments required)
- "What Test Next?" drill question type — trains users on test sequencing
- Confusion pair drill mode — focus practice on commonly confused gems (130 gems enriched with confusedWith pairs)
- Gem-A FGA Section D exam simulator — partial credit scoring, constants sheet, strike system
- FEEG 12-stone European Gemmologist exam simulator
- Half-exam options for Gem-A (6 stones, 1h35m) and FEEG (6 stones, 2h15m)
- Exam readiness score — tracks preparedness before attempting mock exams
- Guided onboarding walkthrough — interactive Ruby identification that teaches the workflow step-by-step
- Exam study guide pages — static web pages for GIA, Gem-A, and FEEG prep
