CS2 Blue Gem Pattern Guide: Tiers, Values & Where to Trade in 2026
- ▸Blue gems are Case Hardened skins with 70–95% blue surface coverage, ranked from Tier 1 (rarest) to Tier 3
- ▸Tier 1 patterns like AK-47 #661 or Karambit #387 sell for $15,000–$100,000+, outpacing many investments
- ▸You can instantly verify a pattern's blue percentage using the CS2 inspect screen since the 2024 update
- ▸CSBoard charges 0% for deposits and direct item-for-item exchanges without money. P2P marketplace sales carry a 2% selling fee. Instant sell is a separate buyout offer; check its quote and the chosen payout method’s fees and timing before confirming.
Within Counter-Strike 2, blue gem patterns on Case Hardened weapons are among the most sought-after skins. The term “blue gem” describes a top-tier Case Hardened item where the random pattern index produces a blade or body that is predominantly blue rather than the usual mix of gold, silver, and purple. The community tracks these patterns meticulously, assigning tiers based on the amount and placement of blue, with Tier 1 being the absolute elite.
The pattern index is a number between 0 and 999 that determines the exact finish on any Case Hardened skin. As of the CS2 2024 update, you can now read this index directly in Steam's inspect window, making instant pattern verification possible without external tools.
Since the CS2 2024 update, the pattern index is displayed directly in the Steam inspect screen. No third-party site needed – just open the inspect link and look for the pattern number.
Top 7 Most Valuable Blue Gem Patterns Across Weapons
- 1
AK-47 | Case Hardened — Pattern #661
Often called the "Scar" pattern, this Tier 1 AK boasts massive blue coverage on the top and magazine.
$50,000–$150,000 - 2
Karambit | Case Hardened — Pattern #387
Legendary 90%+ blue playside, the most iconic knife blue gem.
$25,000–$80,000 - 3
M9 Bayonet | Case Hardened — Pattern #601
Full blue tip and mid-body, often paired with a clean playside.
$12,000–$40,000 - 4
Five-SeveN | Case Hardened — Pattern #278
100% blue slide Tier 1, the holy grail of Five‑SeveN blue gems.
$3,000–$10,000 - 5
Bayonet | Case Hardened — Pattern #555
Heavy blue on both sides, strong collector demand.
$8,000–$25,000 - 6
Butterfly Knife | Case Hardened — Pattern #638
One of the few Tier 1 Butterfly patterns with 85%+ blue.
$10,000–$30,000 - 7
AWP | Case Hardened — Pattern #387
Mirrored after the Karambit #387, this AWP carries heavy front blue.
$2,000–$6,000
Some sellers attempt to pass off lower-tier patterns as blue gems. Always double-check the pattern index in the inspect link and compare it against trusted community rankings.
Where to Trade Blue Gems: P2P vs. Traditional Marketplaces
| Feature | CSBoard P2P | Traditional Marketplaces |
|---|---|---|
| Trading Fees | 2% P2P sales; 0% direct item exchanges | 6% – 12% |
| Payout Method | USDT (TRC20/BEP20/Sol/TON) | Bank transfer, PayPal |
| KYC Required | No | Often yes |
| P2P Direct | Yes – trade directly with other players | No – bots or listed marketplace |
| Payout Speed | Instant | 1 – 7 days |
Live Blue Gem Listings on CSBoard
Frequently Asked Questions
Explore Blue Gem Listings Now
CSBoard charges 0% for deposits and direct item-for-item exchanges without money. P2P marketplace sales carry a 2% selling fee. Instant sell is a separate buyout offer; check its quote and the chosen payout method’s fees and timing before confirming.
Browse Blue Gems →Live prices
Current market prices for the skins in this guide — updated continuously.
