GemBrain: Crystal Identifier

Apparent Group Limited

In-app purchases

About this app

GemBrain is an AI-powered gemstone identifier for Android. Snap a photo of any stone, crystal, or mineral and get an instant identification, complete with confidence scores, detailed properties, and an estimated market value. Results take seconds, not days.

Whether you found something interesting on a hike or you need to evaluate a specimen before buying, GemBrain takes the guesswork out of gemstone identification. Our AI analyzes color, luster, structure, and surface texture to deliver accurate results every time. No geology background needed.

INSTANT AI IDENTIFICATION
Point your camera at any stone and get a detailed identification in seconds. GemBrain covers thousands of gemstone species and delivers results with confidence scores so you know how certain the match is.

MARKET VALUATION
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. Know what you have before you buy or sell.

REAL VS. FAKE DETECTION
Our exclusive guides teach you how to spot synthetic and imitation specimens. Visual tests, touch tests, and expert techniques for popular stones like diamonds, emeralds, and rubies. Verify authenticity before making costly mistakes.

BUILD YOUR ROCK COLLECTION
Manage your personal collection with our rarity tracking system. Every identified specimen gets a rarity score from S to C. Track your stats, earn achievements, and see your highlights including rarest find, unique species identified, total scans, and active streak.

AI CHAT ASSISTANT
Ask GemBrain anything about gemstone properties, crystal healing uses, care instructions, or market trends. Get detailed answers instantly without needing to search elsewhere.

DISCOVERY LIBRARY
Browse educational articles, crystal healing guides, birthstone profiles, real vs. fake stone comparisons, and tips for selecting quality specimens. Useful for collectors, healing enthusiasts, rockhounding hobbyists, and geology students.

MAGNETIC STONE DETECTOR
GemBrain includes a built-in metal detector using your phone's magnetometer sensor. Test specimens for magnetic properties, detect iron-based minerals, and add another tool to your identification process. Move your phone around any specimen for real-time readings.

Download GemBrain and start identifying the stones around you with accuracy.

Ratings and reviews

nothing but issues since first download. got a red error code with no stone found googled it and it said this "This alert indicates an authentication error where the application is unable to connect to its backend service." and It typically means the API key entered in the settings is invalid, expired, or incorrect.". it's kind of crazy they give you a 7-Day free trial before you pay and you can't even use the app. there is no way to contact customer support or get assistance in submitting help

I paid for a week, and got the same result on every stone I scanned. very upset. and then there is no one to talk to about my concern. app was difficult to use and then was totally wrong. deleted app and would like money back

you took $7.41 out of my account 4 times since July 10 and that's after i emailed u to cancel my subscription. so after the 2nd time i emailed u again asking for a refund and no response. so after the 3rd time i emailed u again and no response. i would like to be refunded $29.64 ASAP please. thank u

What’s new

This update includes general performance and stability improvements across the app.
We refined several interface elements for a smoother, more polished experience.
Various minor bug fixes have been applied to improve overall reliability.
Thank you for using the app - we're continually working to make it better.