Rock Identifier is a free web-based AI tool that instantly identifies rocks from uploaded photos, with no sign-up required. Upload a clear photo, optionally add location and observations, and receive a likely rock type with an explanation of visible clues.
What is Rock Identifier?
Rock Identifier is a free online rock identification service powered by AI. It takes one or more rock photos as input, along with optional location and physical observations, and outputs a suggested rock type (igneous, sedimentary, or metamorphic) with a readable explanation of the visual features that led to the match. The tool runs entirely in the browser—no app download or account creation needed.
Key Features
- Instant AI Identification — Upload a well-lit photo; the AI compares grain size, layering, texture, color, and shape against known rock patterns and returns a result in seconds.
- No Sign-Up Required — Use the free tier immediately with a generous daily identification allowance; no password or registration.
- Multiple Photo Uploads — Upload full views, close-ups, and fresh edge shots to improve accuracy.
- Location-Based Context — Optionally enter where the rock was found (riverbed, beach, mountain, etc.) to narrow possibilities.
- Custom Observations — Add notes on weight, layering, grain visibility, reaction to vinegar, magnetism, or glass scratching.
- Paid Unlimited Upgrade — Upgrade to IdentifyRock Unlimited for unlimited identifications, unlimited AI chat messages, and saved collection management.
- Educational Explanations — Each result explains the visible clues (e.g., “interlocking grains”, “fine-grained matrix”) so users learn how identification works.
Who is it for?
- Hikers and outdoor explorers — Identify rocks found on trails, riverbeds, or beaches without carrying a field guide.
