Add photos of your stone
Tap to take a photo or upload up to 4 images. Drag & drop works too.
📸 How to get the most accurate result
- Use natural, indirect daylight. Indoor bulbs shift colors, especially purples, pinks, and greens.
- Shoot more than one angle. A whole-stone shot plus a close-up of the surface or a single crystal face tells us far more.
- Include something for scale, like a coin or your fingertip.
- Show natural texture. If it's tumbled and shiny, a raw or broken edge (if any) is gold for identification.
Add a few details to sharpen the result (optional)
We look up the geologic formation at that spot (via the Macrostrat geologic map) to sharpen rock identification. Your coordinates are used for that lookup only, never stored.
Photo identification is a strong starting point, not a lab certification.
Examining your specimen…
The Mineral Encyclopedia
Every entry covers the full diagnostic picture: hardness, streak, luster, density, look-alikes, at-home tests, and the fakes to watch for. Search it, filter it, learn it.
No matches. Try a different spelling, or browse a category above.
My Finds
Your identified stones, saved on this device. Tap one to revisit its encyclopedia entry.
Nothing saved yet. Identify a stone, then tap “Save to my finds.”