Identify a Rock, Mineral or Crystal from a Photo
Upload one clear photo. You will get up to three possible matches, the reasoning behind them, and follow-up questions that help narrow things down. Properties shown for each match come from our reference database, not from the AI model.
Photo tips
- Use bright, even light and a plain background.
- Take one overall photo and one close-up of the surface.
- Include a coin or ruler for scale.
Safe tests you can do at home
- Scratch test against a copper coin, a steel nail or a glass plate to bracket hardness.
- Streak the specimen on the back of an unglazed ceramic tile.
- Check for magnetism with a small magnet.
- Check whether it is transparent, translucent or opaque.
We do not recommend tasting, heating or acid-testing unknown specimens. Some minerals are toxic or release harmful gases.