Rock Identifier — Identify Rocks and Minerals
Upload a close photo and add simple field-test clues to narrow down rocks, minerals, and common look-alikes.
What this identifier looks at
We combine visible evidence with useful context, then keep plausible alternatives in view.
Texture and grain size
Used together with the rest of the image—not as a single deciding clue.
Color and luster
Used together with the rest of the image—not as a single deciding clue.
Visible crystals
Used together with the rest of the image—not as a single deciding clue.
Hardness and simple field tests
Used together with the rest of the image—not as a single deciding clue.
How to get your clearest match
Rock identification FAQ
Can a rock be identified from a photo alone?
Often it can be narrowed down, but hardness, streak, magnetism, or an acid test may be needed for a stronger identification.
What photos should I upload?
Use a dry, freshly broken surface in natural light. Include a close-up and a wider view with a size reference.
Does this estimate value?
No. Identification and monetary appraisal are different tasks; valuable specimens should be examined by a qualified professional.