GRADING PLATFORM
Professional Grade Estimation
Coins & Cards Graded Instantly
GEMNET brings institutional-grade AI analysis to your browser. Evaluate collectibles with precision, confidence, and speed.
Morgan Dollar, Philadelphia Mint
1921 - Exceptional Example
✓ Strike: Sharp
✓ Luster: Exceptional
✓ Condition: Excellent
The Collector's Challenge
Whether you collect coins or cards, evaluating raw items accurately requires expertise. Professional grading is expensive, slow, and sometimes inaccessible.
- •Difficult to assess true grade and market value
- •Professional grading costs $10-50+ per item with weeks of delay
- •Miss undervalued gems due to lack of expertise
The GEMNET Solution
Institutional-grade AI analysis for coins and cards at your fingertips. Make confident purchasing decisions with expert insights in seconds.
- Instant grade estimates while shopping on any marketplace
- Costs pennies per analysis, not dollars
- Discover better value and avoid overpriced listings
How It Works
Install the Extension
Add GEMNET from the Chrome Web Store
Configure API Key
Add your OpenAI API key to the extension settings
Browse Listings
Visit marketplaces while shopping for coins or cards
Get Instant Grades
Click to analyze and see AI-powered grade estimates
Graded Coins
Graded Cards
Pokémon TCG Charizard EX Scarlet & Violet
Features
Dual Grading Standard
Evaluates both numismatic coins (Sheldon 1-70) and trading cards (PSA-style grading)
Condition Analysis
Detects wear, damage, centering, focus, and other factors affecting collectible value
Instant Results
Get estimated grades with detailed condition breakdown in seconds
Market Intelligence
Understand what's holding items back from higher grades and premium pricing
Questions & Answers
Release History
v1.0.0
Nov 2025- •Initial release of GEMNET
- •AI-powered coin and card grading
- •Chrome extension for marketplace integration
Ready to Grade Like a Pro?
Join collectors who make informed purchasing decisions with GEMNET