CS2 Pattern CheckerFind Blue Gems & Rare Patterns
Instantly check pattern IDs on Steam Market. Identify Case Hardened Blue Gems, Doppler phases, and rare patterns before you buy.
What is a Pattern ID in CS2?
Every CS2 skin has a Pattern ID (also called Pattern Seed or Paint Seed) - a number from 1 to 1000 that determines how the texture is applied to the weapon. For Case Hardened skins, this determines how much blue appears on the weapon.
Why Pattern Matters for Value
Two Case Hardened skins with the same float can have wildly different values. A standard pattern might sell for $50, while a Blue Gem pattern (like AK-47 Pattern 661) can sell for $100,000+. Knowing the pattern is essential for accurate pricing.
Everything You Need to Check CS2 Patterns
Our pattern checker gives you instant access to pattern data on Steam Market.
Instant Pattern ID
See pattern IDs directly on Steam Market listings without any clicks
Blue Gem Detection
Identify Case Hardened Blue Gems with pattern tier indicators
Doppler Phases
Detect Ruby, Sapphire, Black Pearl, Emerald, and Phases 1-4 automatically
Fade Percentage
Calculate exact fade percentages for all fade skins
Pattern Values
Understand which patterns command premium prices
Visual Preview
Preview patterns before buying to avoid overpaying
Case Hardened Blue Gem Tiers
Understanding pattern tiers helps you value Case Hardened skins correctly.
Tier 1 (True Blue Gems)
85%+ blue playside. Extremely rare, massive price premiums
Examples: Pattern 661, 670, 955 (AK-47)
Tier 2 (High Blue)
70-85% blue. Very desirable, significant premiums
Examples: Pattern 321, 592, 828 (AK-47)
Tier 3 (Mid Blue)
50-70% blue. Good patterns with moderate premiums
Examples: Various patterns depending on weapon
Tier 4 (Low Blue)
Under 50% blue. Normal patterns, standard pricing
Examples: Most Case Hardened skins
Popular Pattern-Dependent Skins
These weapons have the most pattern-based value variation.
AK-47 Case Hardened
Most valuable Blue Gem is Pattern 661 "Scar" - full blue top
Karambit Case Hardened
Pattern 387 is the true "Blue Gem" - nearly full blue playside
Five-SeveN Case Hardened
Pattern 278 offers the most blue coverage
Doppler Knives
Ruby/Sapphire/Emerald are most valuable phases
How to Check Pattern IDs
Install Extension
Add our free Chrome extension from the Web Store
Browse Market
Go to Steam Market and view Case Hardened or Doppler listings
See Patterns
Pattern IDs appear automatically on every listing
Never Miss a Blue Gem Again
Our pattern checker shows pattern IDs instantly on Steam Market. Spot underpriced Blue Gems and avoid overpaying for common patterns.
Pattern Checker FAQ
What patterns are worth money?
For Case Hardened skins, patterns with more blue are worth more. The AK-47 Pattern 661 "Scar" is the most valuable, worth $100,000+. For Dopplers, Ruby, Sapphire, Emerald, and Black Pearl phases command premium prices.
How do I know if a pattern is good?
Our extension shows pattern IDs on Steam Market. You can then reference Blue Gem databases or our pattern guide to understand the value. Generally, higher blue percentage = higher value.
Does pattern affect all skins?
Pattern matters most for Case Hardened, Doppler, Fade, and Marble Fade skins. For most other skins, float value is more important than pattern.
Can patterns change?
No. Once a skin drops, its pattern ID is permanently fixed. It's determined at the moment the skin is created and never changes.
What is Fade percentage?
Fade percentage (0-100%) indicates how much of the yellow/red gradient appears on Fade skins. 100% fade is most valuable. Our extension calculates this automatically.