Mixed rounded river pebbles
Polymictic gravel; individual clasts likely include quartzite, granite, and other common rocks
sedimentary
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
Live from the field
Recent identifications
A rolling collection of rocks, minerals, and gems just identified by the Rock Identifier community.
Rounded granite cobble
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Rough green calcite
Calcite, CaCO₃
mineral
Milky quartz (rough specimen)
Quartz, silicon dioxide (SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Likely green aventurine (quartz-rich rock)
Quartz-rich rock with possible fuchsite mica; composition cannot be confirmed from the photo
metamorphic
Milky quartz (likely)
Quartz, silicon dioxide (SiO₂)
mineral
Mica (likely biotite-rich mica aggregate)
Biotite, a potassium–iron–magnesium mica; approximate formula K(Mg,Fe)₃AlSi₃O₁₀(F,OH)₂
mineral
Quartz-rich rock, likely quartzite
Quartzite, composed predominantly of quartz (SiO₂)
metamorphic
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.
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Free to download. The next rock you pick up — name it.