Blue Gem Checker

CS2 Case Hardened Pattern Checker

Identify Blue Gem patterns and tiers for AK-47, Karambit, Five-SeveN & more

Check Case Hardened Pattern
Paste your inspect link to identify the pattern tier and blue percentage
Famous Blue Gem Patterns
Most valuable Case Hardened patterns by weapon

AK-47 | Case Hardened

#661
Scar Pattern
#1 blue gem, sold for $400k+
#670
Reverse Scar
Almost full blue top
#955
Blue Top
Clean full blue
#321
Blaze Top
Excellent blue coverage

Karambit | Case Hardened

#387
Full Blue PS
Best Karambit pattern
#442
Near Full Blue
95%+ blue playside
#269
Strong Blue
85% blue coverage
#463
Blue Blaze
Good blue distribution

Complete Guide to CS2 Blue Gems

What is a Blue Gem?

A "Blue Gem" is a Case Hardened skin with an exceptionally high percentage of blue coloring. The Case Hardened finish features a random mix of blue, purple, and gold colors, with each pattern seed (0-999) producing a unique distribution. Patterns with 80%+ blue coverage are considered "blue gems" and can be worth 10-100x more than standard patterns.

Our Case Hardened Pattern Checker identifies the pattern seed from any inspect link and provides an estimated tier classification. While pattern values can vary based on exact blue placement and market conditions, the tier system provides a reliable starting point for valuation.

Pattern Tier System

  • Tier 1: 85%+ blue, extremely rare, 20-100x+ multiplier
  • Tier 2: 70-85% blue, highly valuable, 5-20x multiplier
  • Tier 3: 55-70% blue, above average, 2-5x multiplier
  • Tier 4: 40-55% blue, decent blue, 1.5-2x multiplier
  • Common: Mixed pattern, market price

Weapons with Case Hardened

  • • AK-47: Most traded, Scar #661 is legendary
  • • Karambit: Highest value blue gems overall
  • • Five-SeveN: Affordable blue gem entry point
  • • Other Knives: M9, Butterfly, Bayonet, etc.
  • • Huntsman: Unique two-sided patterns

Why Use Our Blue Gem Checker?

  • ✓Instant pattern seed identification
  • ✓Tier classification for all patterns
  • ✓Estimated blue percentage
  • ✓Price multiplier guidance
  • ✓Famous pattern reference
  • ✓100% free, no registration