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

Copper-oxide ore (malachite-bearing copper ore)

Malachite, Cu₂CO₃(OH)₂, with likely chrysocolla and iron-oxide minerals

mineral

Weathered quartz-mica schist

Quartz–muscovite/biotite schist, locally iron-oxide stained

metamorphic

Tumbled/polished purple fluorite (probable)

Fluorite, calcium fluoride (CaF₂)

mineral

Pink chalcedony or weathered pink quartzite

Microcrystalline quartz (SiO₂), possibly iron-bearing chalcedony

mineral

Dark mafic rock fragments, possibly basalt

Basalt (fine-grained plagioclase–pyroxene rock), tentative

igneous

Banded chert or flint pebble

Microcrystalline quartz (chalcedony), SiO₂

sedimentary

Vesicular basalt (likely weathered scoria)

Basaltic volcanic rock; chiefly plagioclase, clinopyroxene, and iron-rich olivine, with vesicles formed by trapped gas

igneous

Rounded basaltic pebble

Basalt, a fine-grained mafic volcanic rock composed mainly of plagioclase feldspar and pyroxene, with possible olivine and iron oxides

igneous

Obsidian (likely volcanic glass)

Obsidian; predominantly rhyolitic glass, chiefly SiO₂

igneous

Basalt

Basalt; fine-grained mafic volcanic rock, chiefly plagioclase, pyroxene, and commonly olivine

igneous

Possible industrial slag or basaltic volcanic glass

Likely iron-rich vitreous slag; natural alternative: basaltic glass (tachylite)

igneous

Magnetite (lodestone), possibly meteoritic iron

Magnetite, Fe₃O₄; exact identification is uncertain from the image alone

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.