500,000+ Collectors Worldwide

Identify Any Stone.
Instantly.

Point your camera at any gem or crystal. Get instant identification, market values, and expert-level knowledge in seconds.

Download Free
4.9 on App Store
Rose Quartz Crystal
Hardness 7 Mohs
Top Source Brazil
Magnetism Non-magnetic
System Trigonal
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10,000+ Gemstones
98% Accuracy
500K+ Users
4.9 Rating
Features

Everything a Gem Collector Needs

Professional-grade tools powered by AI, designed for collectors, jewelers, and enthusiasts.

Most Popular

AI Photo Recognition

Snap a photo of any stone and get instant identification. Our AI works even with imperfect shots - no expertise required.

  • Works offline
  • Instant results
  • AI-enhanced clarity

Build Your Collection

Track every stone you find. Earn rarity scores, complete challenges, and showcase your collection.

Market Values

Know if your find is worth $10 or $10,000. Get real-time market estimates and track your collection's value.

Expert Knowledge

Access decades of gemologist expertise. Learn about hardness, crystal systems, origins, and more.

Metal Detector

Use your phone's magnetometer to detect hidden metals and magnetic minerals in the field.

How It Works

Three Steps to Gem Mastery

01
Snap a photo

Snap a Photo

Point your camera at any gemstone, crystal, or mineral. No perfect angles needed.

02
Get instant ID

Get Instant ID

Our AI analyzes the image and identifies the stone with detailed properties.

03
Know its value

Know Its Value

Discover market prices, rarity scores, and add to your growing collection.

Reviews

Trusted by Collectors

"I found a stone at a flea market and GemBrain identified it as a rare alexandrite. Paid $20, turns out it was worth over $2,000! This app literally pays for itself."

JM
James M. Gem Collector, Arizona

"As a jeweler, I use this app daily to quickly verify stones. The accuracy is impressive and the market value estimates help me price pieces fairly. Essential tool."

SR
Sarah R. Professional Jeweler, NYC

"My kids and I use GemBrain on our hiking trips. It's turned rock hunting into an exciting treasure hunt! We've built an amazing collection together."

LT
Lisa T. Outdoor Enthusiast, Colorado

Start Your Collection Today

Join 500,000+ collectors discovering the hidden value of gemstones. Free to download.

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