Case Hardened skins are tinted by a paint seed, one of 1000 patterns. The seed fixes the blue, gold and purple layout on the weapon, so two Case Hardened of the same wear can look completely different and trade at very different prices.
Seeds with heavy blue coverage on the most visible side are called "Blue Gems". On the AK-47 the best-known examples are seeds like 661, 670 and 955; on the Karambit, seed 387 is the reference Blue Gem. Tier lists rank seeds by blue percentage, and top patterns command large premiums over an average Case Hardened.
Because the seed is not shown in the item name, buyers check the paint seed in the inspect screen or a pattern database before paying a Blue Gem price.
Across 25 markets the WW floor moved -0.5% in 53 days: $0.773 → $0.769.
Sources: Valve item data · our 25-market price snapshot.
How much does Karambit (Case Hardened) cost?
Karambit (Case Hardened) starts at $665.00 across 25 marketplaces in our comparison, buyer fees included. Current floors by wear: FN $1,600.00 · MW $849.90 · FT $710.40 · WW $665.00 · BS $605.00.
Where can I sell or cash out Karambit (Case Hardened)?
The best net payout right now is $638.48 on DMarket after its seller fee — the Sell tab ranks every venue by what you actually keep.
Does Karambit (Case Hardened) come in StatTrak or Souvenir?
Yes — this skin also trades as StatTrak (from $799.00). Use the Quality pills above to switch; every number on the page recalculates for the selected variant.
How do I get Karambit (Case Hardened)?
Two routes: open CS:GO Weapon Case (trading from $99.17) and gamble on the odds, or pay $665.00 for the skin itself on the markets above. The direct buy is nearly always the cheaper path.
CS:GO Weapon Case
Inspect a WW copy in game 
