Gemstone Identifier
Identify a cut, polished or tumbled gem. Enter what you can observe — colour, transparency, lustre and hardness — and Gemdle ranks the possible gemstones it could be. Cut stones hide crystal shape, so colour, fire and hardness do the work here; treat the result as a shortlist to verify, and watch for look-alikes and simulants. Searches 166 gemstones.
How to identify a gemstone step by step
- Colour — the first thing buyers notice, but many gems share a colour (and colour can be heat-treated or dyed).
- Transparency & clarity — transparent, translucent or opaque? Eye-clean or included?
- Lustre & fire — glassy, adamantine (diamond-bright) or resinous? How much rainbow "fire"?
- Hardness — a key separator: a gem that scratches quartz (7) rules out softer look-alikes.
- Beware treatments & simulants — glass, doublets and synthetics mimic many gems; confirm with a jeweller for anything valuable.
Popular gemstones to compare against
Frequently asked questions
Can a gemstone be identified without special tools?
You can narrow it down a lot from colour, transparency, lustre and a hardness test, but final gem identification (especially natural vs synthetic or treated) often needs a refractometer and a gemmologist — our tool gives you the shortlist to take to one.
Can you identify a gemstone from a photo alone?
Not reliably. Geologists examine a specimen from several angles and test hardness, streak and density. A photo gets you a shortlist; Gemdle's identifier uses the same observable clues to rank possibilities you then confirm in person.