Best Classic Knife Case Hardened Patterns: Blue Gem, Gold Gem

The Classic Knife | Case Hardened combines the extremely desirable Case Hardened finish with the nostalgic design familiar to all CS 1.6/ CS Source OGs. The faithful recreation of the default knife in pre-CS:GO era serves as a perfect canvas for some of the most desirable Case Hardened patterns in existence, including the iconic Blue Gems. Unlike a few knives with Case Hardened / Heat Treated finishes that might have a patchy blade with quite a few imperfections, the Blue Gem version of a Classic Knife is a stunner. In our guide, we will provide you with all you need to know about the Classic Knife Case Hardened patterns and where to buy this knife with a specific pattern. 

What’s Special About Classic Knife Case Hardened?

Released back in 2019, timed to the 20th anniversary of Counter-Strike, the Classic Knife is a copy of the iconic default knife from CS 1.6., sporting a recognizable curved blade along with a carbon-fiber handle. The Case Hardened finish for this knife looks incredible due to the sheer size of the blade and unique pull-out and inspect animations. As with other Case Hardened / Heat Treated knives and skins, there’s a certain number of pattern index numbers that command a higher price tag and overall desirability.  

What is a Blue Gem?

Every Case Hardened skin or knife (or any pattern-based skin for that matter) is assigned with a pattern seed (number from 1 to 1000) in CS2. Depending on the number your skin lands on, it will determine how your Case Hardened knife or skin will look.

While the Case Hardened skins generally look like a blend between blue, gold and purple shades molten into each other, there is a set of unique patterns that stand out drastically. A Blue Gem is a colloquial name for patterns where blue is a dominant color with little to no imperfections and orange or purple patches. The blue color should cover the majority of the playside of the blade in order to be called the Blue Gem. However, not all blades with predominantly blue coverage are equal, meaning that some patterns command significantly higher prices. Here is the Classic Knife Case Hardened patterns tier list, ranked by the amount of blue and overall cleanliness of the playside. 

Classic Knife Blue Gem Tier List

Aside from the rank 1 Blue Gem that is widely considered to be the best Classic Knife pattern, there is a slew of good patterns that can be divided into four distinct tears below the true Blue Gem. Here is the breakdown:

True Blue Gem

Pattern Index: 403

Tier 1 Case Hardened Patterns

Tier 1 Patterns: 58, 169, 316, 456, 577, 601, 681 

Tier 2 Case Hardened Patterns

Tier 2 Patterns: 55, 210, 281, 351, 449, 585, 634, 704, 922

Tier 3 Case Hardened Patterns

Tier 3 Patterns: 67, 103, 107, 116, 157, 162, 166, 170, 180, 187, 202, 239, 262, 269, 288, 336, 345, 349, 372, 374, 383, 393, 417, 430, 447, 496, 503, 529, 533, 537, 556, 583, 588, 624, 628, 632, 668, 715, 797, 837, 850, 867, 880, 887, 915, 916, 954

Tier 4 Case Hardened Patterns

Tier 4 Patterns:  3, 14, 59, 84, 88, 91, 95, 108, 124, 138, 151, 176, 179, 203, 212, 222, 227, 235, 286, 292, 294, 298, 299, 315, 325, 387, 400, 429, 442, 462, 504, 507, 516, 519, 523, 525, 526, 528, 546, 547, 551, 564, 600, 606, 610, 613, 619, 646, 651, 665, 669, 675, 680, 689, 693, 698, 700, 710, 719, 740, 750, 790, 794, 805, 806, 807, 812, 818, 820, 821, 828, 859, 866, 869, 872, 878, 899, 902, 910, 941, 955, 959, 969, 973, 995 

Where to Buy Classic Knife Blue Gem

Various versions of Classic Knife Case Hardened are always present on Skin.Land, a marketplace where you can buy and sell your own skins for real money. Simply visit the item’s page where you will be presented with multiple options for each quality. Next, you can inspect each skin either by generating a detailed screenshot with full info or by inspecting said skin directly in CS2 client.