GemBrain: Crystal Identifier

GemBrain: Crystal Identifier

Rock & Stone Value Scanner

18 ratings
11 reviews
Free
In-App PurchasesWith Ads

Details

Released
March 19, 2026
Updated
October 16, 2026

Features

GemBrain: Crystal Identifier screenshot #1 for iPhone
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GemBrain: Crystal Identifier screenshot #10 for iPhone
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About

Instantly identify gemstones, crystals, and minerals with AI-powered photo analysis. Get detailed properties, market values, and learn to spot fakes. Organize your collection and access expert advice.

✓AI gemstone identification
✓Market value estimation
✓Fake stone detection
✓Collection management
✓AI expert assistant
✓Built-in metal detector
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What's New in GemBrain

3.0.1

October 16, 2026

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.

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Subscriptions & In-App Purchases

Gem Brain Annual Access

Yearly premium subscription with full features

$29.991 Year
7 Days trial
How to cancel GemBrain subscription ⁉️

User reviews

Does not work correctly

I only tried it cause it was free and I was curious. So glad I didn’t pay for this and I suggest that no one else wastes their money. I’ve been a rock hound my whole life. I’m very confident in my knowledge of what’s in my collection. I tried 4 very basic and easy to identify stones. This app didn’t get a single one correct. Not even close.
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Response from developer

Thank you for taking the time to describe this, and I'm sorry the identifications came back wrong on stones you know well. Getting basic, familiar specimens incorrect is a real problem, and your notes about the four stones have been passed to the engineers. If you're willing to share which stones they were, it would help them narrow down what's going wrong.

didn't tell him I doubted him until after

my partner got me a rose quartz heart for our anniversary from some little roadside shop and I did not want to seem ungrateful by questioning it out loud in front of him so I just went to the bathroom and scanned it real quick. genuine, 89%. told him later, he thought it was funny that I doubted him. we'd also just had tacos from this place that gave both of us food poisoning later that night, unrelated, but that's the night I remember this happening
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Response from developer

We love that GemBrain could help verify the rose quartz discreetly. Thank you for sharing that story!

if it's fake does it even work

I hate that I'm even asking this question but if it's fake does it even work, I mean spiritually. anyway scanned my "black tourmaline," $22, turned out to be dyed obsidian. weirdly relieved to actually know instead of using it for protection stuff and wondering the whole time. already eyeing a real one to replace it
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Response from developer

Real answers instead of wondering is exactly what we're here for. Glad GemBrain could help you make that informed choice for your collection.

Solid ID, would love deeper valuation data eventually

The identification engine is better than I expected going in, and I say that as someone who wrote this whole category off after Rockd embarrassed itself years back. I ran it on a Tsumeb specimen I paid $1,850 for and the species and physical data came back accurate, which is what actually matters to me. I'd like the valuation ranges to get sharper about collector-grade versus bulk specimen pricing at some point, but that's a wish list item, not a complaint — the identifications themselves are what I'm paying for.
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Response from developer

Thank you! Accuracy on collector-grade specimens like that Tsumeb is exactly what we're aiming for. We'll definitely look into refining the valuation data for collector versus bulk pricing.

does the pricing math for me now

identifies fine and gives me a starting range, reddit is great if you have two days and don't mind wrong answers, this is at least right now. still hop on ebay after for sold comps but that's on me not the app

Response from developer

Thanks for the review! Quick, accurate valuations instead of waiting days on Reddit is exactly what we're going for.

Developer apps

FAQ

What is GemBrain?

GemBrain is a mobile application that uses AI to identify gemstones, crystals, and minerals from photos. It also provides market valuations, helps detect fakes, and offers collection management features.

How accurate is GemBrain's identification?

GemBrain's AI analyzes color, luster, structure, and surface texture to deliver accurate identifications. The app provides confidence scores with each identification.

Does GemBrain provide market value for stones?

Yes, every scan includes a market valuation based on stone type, quality, and current pricing data. It shows estimated price ranges for different forms of the stone.

Can GemBrain help me spot fake stones?

Yes, GemBrain includes guides and teaches techniques to detect synthetic and imitation specimens for various gemstones like diamonds, emeralds, and rubies.

What are the subscription options for GemBrain?

GemBrain offers a weekly subscription for $6.99 and an annual subscription for $39.99, both with a 7-day free trial.

Is GemBrain available on Android devices?

Based on the provided data, GemBrain is currently supported on iPhone and iPod devices.

How often is GemBrain updated?

The latest version of GemBrain is 1.0.8, and it was last updated on June 30, 2026. This suggests regular updates are provided.

Does GemBrain have ads?

No, the application data indicates that GemBrain does not contain advertisements.