Coming soon to iPhone
Find out if your rock is rare.
Point your camera at the ground while you walk. Rarestone spots the rocks worth checking, tells you what they are, and whether they're a keeper.
Get early access
Free on iPhone at launch.
Agate · 94%
Lake Superior agate
Banded chalcedony · Keep it
Scout as you walk
Scan the ground in real time. Rarestone marks the rocks worth a closer look.
Know what you found
Get the name, what it's made of, and how rare it is, in seconds.
Keep or drop
A clear verdict on every find, and a collection of the ones you kept.