Free Online Rock Identifier
Upload a photo and get real rock identification results in seconds. Works directly in your browser.
Identify rocks, minerals, and crystals instantly. Perfect for rockhounders, collectors, students, and anyone wondering "what is this rock?"
3 Steps to Identify Rocks Online
Upload a photo and get instant identification results
Upload Your Rock Photo
Use natural light and fill the frame with your specimen. Our system accepts JPG, PNG, or WebP images up to 6MB.
AI Analysis in Progress
Our technology evaluates color, texture, crystal patterns, luster, and surface features to identify your specimen.
Get Detailed Results
Receive multiple matches with confidence scores, expert descriptions, and links to learn more about each possibility.
Expert Info
Geology details
Everything You Need to Identify Rocks
Our free online tool gives you professional-grade identification results.
Instant Photo Analysis
Upload any rock photo and get identification results in 10-20 seconds. No waiting, no apps to install.
Multiple Match Results
Get 2-3 possible matches with confidence scores so you can compare and identify with certainty.
Expert Descriptions
Each result includes geological details about composition, formation, and key identifying features.
Also includes
How to Take Better Rock Photos
A clear photo is the biggest factor in accurate identification
Do This
Natural Light
Shoot near a window or outdoors. Avoid harsh shadows and direct sunlight glare.
Fill the Frame
Get close enough to show surface texture and crystal details clearly.
Show Key Features
Capture crystal faces, grain patterns, color variations, and luster.
Avoid This
Keep It Dry
Wet surfaces reflect light and hide the true color of your specimen.
No Flash
Camera flash creates harsh glare and washes out natural colors.
No Blurry Photos
Blurry images make it impossible to see crystal structure and texture.
Want to learn more? Read our rock identification guide
Want More Geology Details?
The Ruby Glint app includes saved history, detailed rock data, market value estimates, 260,000+ rockhounding locations, and unlimited identifications.
Frequently Asked Questions
Get answers to common questions about rock identification, rockhounding, and using our platform.
Yes. You can upload a rock photo and get instant identification results directly in your browser at no cost.
The online identifier works for common igneous, sedimentary, and metamorphic rocks, plus minerals and crystals like quartz, calcite, feldspar, garnet, and more.
Accuracy depends on photo quality. Clear, well-lit images usually produce strong results with confidence scores and clear descriptions.
No. This page is a free online rock identifier. You can also download the Ruby Glint app if you want saved history and unlimited identifications.
Many rocks and minerals look similar in photos. Multiple matches help you compare descriptions and confidence levels to narrow it down.
Use natural light, fill the frame, and show texture and crystal features. Avoid glare and keep the specimen dry and clean.
Ready to Identify Your Rock?
Scroll up and upload a photo to get started. It's completely free - no account required.