GemBrain: Crystal Identifier
Rock & Stone Value Scanner
Only for iPhone
Free · In-App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
GemBrain turns your iPhone into a powerful AI gemstone identifier. Snap a photo of any stone, crystal, or mineral and get an instant identification with confidence scores, detailed properties, and estimated market value, all in seconds.
Whether you're a collector, a healing crystal enthusiast, a rockhounding hobbyist, or simply curious about a stone you've found, GemBrain makes expert-level gemstone identification accessible to everyone.
IDENTIFY GEMSTONES WITH CONFIDENCE
Our advanced AI analyzes color, luster, structure, and surface texture to deliver accurate identifications every time. Just point your camera and let GemBrain do the work. No geology knowledge required.
KNOW WHAT YOUR FINDS ARE WORTH
Every scan includes a complete market valuation based on stone type, quality grade, and current pricing data. See estimated price ranges for rough, tumbled, and faceted forms so you always know the value of what you've found. Make buying and selling decisions backed by real market data.
SPOT FAKES BEFORE YOU BUY
Our Real vs. Fake guides teach you how to detect synthetic and imitation specimens. Learn visual tests, touch tests, and expert techniques for diamonds, emeralds, rubies, and more. Never be fooled again.
BUILD YOUR COLLECTION
Organize your personal collection with our rarity tracking system. Every identified specimen receives a rarity score from S to C, letting you see which finds are truly rare. Track collection stats, earn achievements, and view your highlights including rarest find, unique species identified, total scans, and active streak.
ASK AN EXPERT INSTANTLY
Have a question about gemstone properties, healing uses, care instructions, or market trends? Ask GemBrain's AI assistant and get expert answers on demand, with expertise on demand.
EXPLORE YOUR DISCOVERY LIBRARY
Dive into our educational content with crystal healing guides, birthstone profiles, stone comparisons, and collecting tips. Learn gemstone geology, metaphysical properties, and historical significance from our curated articles.
DETECT MAGNETIC STONES
GemBrain includes a built-in metal detector using your phone's magnetometer. Test any specimen for magnetic properties, detect iron-based minerals, and add another layer to your identification process. Simply move your phone around any specimen for real-time readings.
Trusted by crystal enthusiasts, rockhounding hobbyists, and gem collectors worldwide. Download GemBrain today and start identifying with accuracy. Your next great find is one photo away.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
GemBrain 2.2.0
- Faster, smoother browsing and search across the full gem catalogue
- Quicker, more reliable image loading
- Improved scanning flow with clearer guidance and results
- Refreshed design details and easier-to-read text throughout
- Stability improvements and many bug fixes
Thank you for using GemBrain!
The developer, Apparent Group Limited, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Apparent Group Limited
- Size
- 64.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Gem Brain Weekly Access $9.99
- Gem Brain Annual Access $49.99
- Copyright
- © 2026 Apparent Group Limited