What Gemstone Is This?
Upload a photo for an instant AI first guess from color, clarity, and luster — with honest guidance on when a valuable stone needs a lab.
How it works
1. Photograph the gemstone
Show the stone's true color and clarity in soft daylight. Capture both the face and the side if it is cut.
2. Get an AI first guess
The tool suggests likely gem species from color, transparency, and luster, with a confidence score.
3. Verify valuable stones
For anything that could be precious, confirm the identity and value with an accredited gem lab.
Tips for photographing a gemstone
Color is a gemstone's headline clue — and the easiest thing to get wrong on camera. Aim for neutral, honest light.
- Shoot in soft, neutral daylight — indoor bulbs and screens shift a gem's true color.
- Photograph the stone against white and against black to show its real body color.
- Capture clarity: transparent, included, or opaque tells the AI a lot.
- For cut stones, show the face-up view and one side profile.
- For rough gemstones, include the crystal shape and any host rock still attached.
- Avoid heavy filters or editing — altered color leads to wrong guesses.
Go deeper with Stone Sense
One free scan is just the start. The Stone Sense app gives you unlimited identifications, a saved collection for your stones, an AI geologist chat to talk through color and clarity, and badges to grow your gem knowledge — while always pointing valuable finds toward professional verification.
- Unlimited scans of gemstones, crystals, and minerals
- Save each stone to a personal collection
- Ask an AI geologist about color, clarity, and look-alikes
- Track progress with XP and badges
Frequently asked questions
Is it easier to identify a cut gemstone or a raw one?+
Cut and polished stones are easier from a photo — faceting reveals color, clarity, and brilliance. Raw gemstones are much harder: a rough sapphire, ruby, or emerald can look like an ordinary pebble with its color masked by a weathered surface. Crystal shape and host rock help, but photo ID of rough material is far less certain.
Can AI identify gemstones from a photo?+
AI can suggest candidates from color, transparency, luster, and cut, and does well on distinctive stones like amethyst, garnet, or citrine. But many gems look nearly identical — ruby versus red spinel versus garnet, or emerald versus green tourmaline — and only instruments that measure refractive index, specific gravity, and inclusions can separate them. Treat the result as an educated guess, not a valuation.
How accurate is photo identification for gemstones?+
It is a helpful first step with real limits. Lighting and cameras shift color, synthetics and treatments mimic natural stones perfectly, and value depends on properties no photo measures. Use the AI to narrow possibilities and learn what to look for — but never rely on a photo to confirm the identity or value of an expensive gemstone.
When should I get a gemstone certified by a lab?+
If a stone might be a valuable natural gem — sapphire, ruby, emerald, or fine tourmaline — have it tested by an accredited lab like GIA before buying, selling, or insuring it. A report confirms the species, natural versus synthetic origin, and any treatments. That certification is the only reliable basis for valuation.
Stone Sense is an educational tool. AI photo identification is a helpful first step, but it is not a substitute for certified gemological analysis and cannot establish a stone's value. Always verify valuable gemstones with an accredited laboratory or a qualified gemologist.