Case Hardened skins in CS2 remain some of the most iconic, most expensive, and most misunderstood items in the entire game. Whether you’re chasing a Gold Gem, hunting for a Blue Gem, or trying to understand how pattern seeds work across different knives, this guide covers everything.

• Karambit Blue Gem Guide
  
• Karambit Case Hardened Blue Gem Seeds
  
• Case Hardened Patterns Explained
  
• Gold Gem Pattern Guide
  
  

What Are Case Hardened Patterns?

Case Hardened skins use pattern seeds (0–999) that generate unique mixes of yellow, purple, and blue. This randomness means each knife has thousands of visually different versions.

What Is a Gold Gem?

A Gold Gem is a Case Hardened pattern where the surface is dominated by gold/yellow with minimal purple or blue. These are extremely rare and heavily desired by collectors.

What Is a Blue Gem?

A Blue Gem is a seed showing pure or near-pure blue on the playable side of the knife.

If your focus is Blue Gems, this is your essential resource:
Karambit Blue Gem Guide

And for specific Blue Gem seed numbers:
Karambit Case Hardened Blue Gem Seeds

The Best Gold Gem Seeds for Every CS2 Knife

Below are the Gold Gem seeds commonly recognized by traders, investors, and pattern collectors.
(These are based on community consensus gathered across marketplace data and pattern research sites.)

For each knife, only the most accepted seeds are listed.

Karambit – Case Hardened

Best Gold Gem Seeds:

• 1, 6, 21, 32, 57, 70, 73, 80, 90, 92, 148, 168, 179
  

For Blue Gem collectors, see:
Karambit Case Hardened Blue Gem Seeds

Butterfly Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 43, 53, 70, 80, 113, 168, 179
  

M9 Bayonet – Case Hardened

Best Gold Gem Seeds:

• 17, 21, 38, 57, 70, 80, 92, 113, 148, 179
  

Talon Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 43, 57, 70, 80, 92, 113
  

Flip Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 43, 57, 70, 80, 92
  

Gut Knife – Case Hardened

Best Gold Gem Seeds:

• 57, 70, 80, 92, 113
  

Falchion Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 57, 70, 80
  

Bowie Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 57, 70, 80, 92
  

Huntsman Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 57, 70, 80
  

Nomad Knife – Case Hardened

Best Gold Gem Seeds:

• 21, 38, 57, 70, 80
  

Classic Knife – Case Hardened

Best Gold Gem Seeds:

• 38, 57, 70, 80, 113
  

Why Gold Gems Are Valuable

Gold Gems are rare because the Case Hardened algorithm rarely produces full yellow coverage. Their value is influenced by:

• Overall gold coverage
  
• Number of blemishes or dark spots
  
• How much purple/blue contamination appears
  
• Popularity of the knife

How to Identify the Best Seeds Yourself

If you want to verify a pattern without relying on lists:

1. Open your knife in-game.
   
2. Compare the play-side design.
   
3. Reference seed tables.
   
4. Check against known Blue Gem / Gold Gem databases.
   
5. Validate using community resources.

Final Thoughts

Case Hardened knives in CS2 remain one of the deepest and most exciting skin categories. Whether you’re aiming for a perfect Gold Gem, chasing the dream Blue Gem, or building a full pattern collection, understanding seeds is essential.

If your focus is Karambits, these two resources are must-reads:

• Karambit Blue Gem Guide
  
• Karambit Case Hardened Blue Gem Seeds
  

And if you want complete knowledge across every knife, refer back to the charts above anytime.