AI-powered field geology

Identify any rockfrom a photo.

Snap a photo of any rock, mineral, gem, or crystal — Rock Identifier names it in seconds and explains how it formed, what it’s made of, and where it came from.

No download? Try the free online identifier

4.7on the App Store

Rock Identifier app showing an identified specimen

Live from the field

Recent identifications

A rolling collection of rocks, minerals, and gems just identified by the Rock Identifier community.

Browse all

Granite

Granite, a coarse-grained felsic intrusive igneous rock composed chiefly of quartz, feldspar, and mica

igneous

Pyrite-rich rock (likely pyrite-bearing schist)

Pyrite (FeS₂) in a foliated metamorphic matrix; exact host rock cannot be confirmed from the image

metamorphic

Milky quartz pebble

Quartz (SiO₂)

mineral

Amber jewelry (possibly amber-colored glass or resin)

Amber — fossilized plant resin, chiefly composed of polymerized terpenoids; the pictured material cannot be confirmed from the image

gemstone

Quartz-rich pebble, likely quartzite

Quartzite (predominantly recrystallized quartz, SiO₂)

metamorphic

Painite

Painite, CaZrAl₉O₁₅(BO₃)

mineral

Painite

Painite, CaZrAl₉O₁₅(BO₃)

gemstone

Likely granite

Granite; a coarse-grained rock composed mainly of quartz, feldspar, and mica or other dark minerals

igneous

Weathered granite boulder

Granite, a coarse-grained felsic intrusive igneous rock

igneous

Milky Quartz (Tumbled Chalcedony)

Silicon Dioxide (SiO2)

mineral

Fossiliferous limestone

Calcite-rich limestone (primarily CaCO₃), possibly containing fossil fragments

sedimentary

Likely biotite mica

Biotite, a dark mica-group mineral; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂

mineral

What you get

A pocket geologist, always with you

Identify a rock, then explore everything about it — properties, formation, and your own notes — all in one app.

Photo identification

Point your camera at any rock and get an answer in seconds — no field guide, no guesswork.

Properties & classification

Common name, scientific name, physical properties, and category — the data a geologist would write in a field notebook.

Formation & history

Trace each specimen back through time: how it formed, when, and which geological forces shaped it.

Field notes

Add your own notes to any identification — conditions, observations, or anything you want to remember.

Personal collection

Build a private cabinet of every rock you’ve identified, with your own notes attached.

Community gallery

Browse rocks identified by other rockhounds — and share your own discoveries publicly or keep them private.

How it works

From photo to rock identification in seconds

Step 01
Take a photo
Capture the specimen in natural light. A clear shot of texture and color is all the AI needs.
Step 02
AI does the geology
Our model reads mineral, texture, and color signatures to identify what you’re looking at.
Step 03
Read the report
Get name, classification, formation, uses, and field notes — written like a real field guide.