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.

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

Tumbled or naturally broken quartz crystal

Quartz (silicon dioxide, SiO₂)

mineral

Polished fluorite cabochon

Fluorite (calcium fluoride, CaF₂)

mineral

Polished moss agate

Moss agate, a microcrystalline quartz variety (SiO₂) with green chlorite/actinolite or iron-manganese inclusions

gemstone

Malachite specimen

Malachite, Cu₂CO₃(OH)₂

mineral

Polished pink tourmaline in quartz (likely tourmalinated quartz)

Quartz (SiO₂) with pink lithium-rich tourmaline, commonly elbaite

mineral

Tumbled yellow calcite (probable)

Calcite — calcium carbonate, CaCO₃

mineral

Weathered granite or granitic rock fragment

Granite; chiefly quartz, feldspar, and mica

igneous

Banded gneiss

Gneiss, commonly quartz–feldspar–mica gneiss

metamorphic

Weathered vesicular volcanic rock

Likely basaltic andesite or scoriaceous basalt; exact identification requires fresh surface and testing

igneous

Weathered granite or granitic gneiss boulder

Granite–gneiss; chiefly quartz, feldspar, and mica

igneous

Weathered granite or granitic gneiss

Felsic granitoid; primarily quartz, potassium feldspar, plagioclase, and mica

igneous

Copper-bearing rock, likely cuprite/malachite-bearing breccia

Cuprite (Cu₂O) with malachite [Cu₂CO₃(OH)₂], native copper, and iron oxides in a silicate host

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.