Explore a possible identification
Submit a rock photo for an AI suggestion, treating the result as a starting hypothesis rather than a confirmed identity.
Rock observations and geology
Start with the stone. Keep the questions.
Use Rock ID to explore possible names for rocks, crystals and minerals from a photo. Save discoveries with notes, then use the geology references and AI questions to guide further reading.
Some features may require an in-app purchase or subscription. Check the App Store for current availability and pricing.
Inside the app
Read around the result
Browse information about composition, formation and hardness, crystal and gem guides, and curated geological articles.
Build a record of curiosity
Save discoveries, add notes to your collection and ask the AI geology assistant follow-up questions.
Rock ID
How it works
Document what is visible
Take an overall image and useful details without changing the specimen to suit an expected answer.
Compare, do not just accept
Read the suggested identity and compare it with your observations and reliable references.
Save the uncertainty too
Keep your own description, the suggested name and unanswered questions together in your notes.
Rock ID
Guides
01
Photograph a stone for comparison, not drama
Build a small image set that preserves shape, scale and visible detail.
Read the guide02
Write observations before assigning a name
Separate what you can see from what a reference or model proposes.
Read the guide03
Build a specimen catalog that survives a renamed rock
Use stable numbers and linked notes so new interpretations do not break your collection.
Read the guide04
Compare two possible identifications fairly
Turn competing names into questions about evidence rather than a popularity contest.
Read the guideGood to know
Photo identifications and AI explanations may be wrong or incomplete. They are not safety assessments, certified appraisals or authenticity guarantees. Reference properties are not measurements of your specimen. Feature access and any paid options depend on current in-app terms.
- Can a photograph confirm the exact mineral?
- No. Photo suggestions can confuse similar-looking material and cannot replace examination or suitable analysis. Keep identification provisional.
- What can I save?
- The supplied listing describes a personal collection with saved discoveries and notes. It does not specify an export format or offline identification.
- Does the app measure hardness?
- The listing offers reference information about hardness. It does not describe a phone-based physical hardness measurement.
- Are all features included?
- The supplied description does not give a paid-feature breakdown. Check current in-app terms for access and any paid options.
Rock ID
Rock observations and geology