Classic Knife (Case Hardened): design, wear and market
Case Hardened pattern & Blue Gem
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 27 markets the BS floor moved +0.4% in 18 days: $114.51 → $114.99.
Cheapest venue vs Steam right now: $504.46 apart (81%).
Sources: Valve item data · our 27-market price snapshot.
How much does Classic Knife (Case Hardened) cost?
The current floor for Classic Knife (Case Hardened) is $114.99, compared across 27 marketplaces with fees included. By wear: FN $269.00 · MW $164.49 · FT $123.66 · WW $115.87 · BS $114.99. Steam asks $619.45 for the same listing.
Where can I sell or cash out Classic Knife (Case Hardened)?
Top net quote at the moment: $108.88 via DMarket, seller fee already deducted (see the Sell tab for every venue). Steam credits $388.14 to your wallet, and wallet money cannot be withdrawn.
Does Classic Knife (Case Hardened) come in StatTrak or Souvenir?
It does — StatTrak (from $167.19) listings exist too. Pick a Quality pill above to see that variant priced across the same markets.
How do I get Classic Knife (Case Hardened)?
Two routes: open CS20 Case (trading from $0.990) and gamble on the odds, or pay $114.99 for the skin itself on the markets above. The direct buy is nearly always the cheaper path.
CS20 Case
Inspect a BS copy in game 
