CS2 Blue Gem Patterns are among the most popular knives in the game. Most knives can be found in Case Hardened, which then have a certain chance to feature a Blue Gem pattern. This means that the majority of the playside is covered in blue, with as little yellow as possible. The Navaja Knife Case Hardened Blue Gem Patterns exist across four tiers, decided by community consensus over the years.
You can find all the Navaja Knife Case Hardened Blue Gem Patterns below, including what tier each one belongs to.
Navaja Knife Case Hardened Blue Gem Tier 0 Pattern: 398

The Navaja Knife Case Hardened Blue Gem Pattern 398 is pretty much perfect. The entire playside blade is covered in blue, which is why it’s considered by the community to be the perfect Blue Gem. According to CSFloat’s database, there are only three Navaja Knife Case Hardened 398s in existence, so good luck getting your hands on one.
Navaja Knife Case Hardened Blue Gem Tier 1 Patterns

For almost all players, the Navaja Knife Case Hardened Blue Gem Tier 1 Patterns are going to be more than good enough in the hunt for a great Blue Gem. These Patterns don’t quite have as much blue as the 398, but they’re still so good that it’s splitting hairs, really.
- Navaja Knife Case Hardened Blue Gem Tier 1 Patterns: 74, 182, 371, 407, 638, 713, 720, 749, 838, 839, 913, 919
Navaja Knife Case Hardened Blue Gem Tier 2 Patterns

Because the Navaja Knife Case Hardened is so small, the Blue Gem Tier 2 Patterns are still very, very blue. Compare this to something like the Kukri Knife Blue Gem, which starts to suffer at Tier 2 because of how big the knife is. However, this is where you start to see a few of the flaws creeping in, and this also starts to be reflected in the price. Again, for most players. Tier 2 Blue Gem Navaja Knives will get the job done.
- Navaja Knife Case Hardened Blue Gem Tier 2 Patterns: 30, 139, 194, 265, 273, 282, 283, 284, 322, 332, 335, 358, 401, 420, 424, 453, 460, 463, 490, 510, 515, 598, 635, 694, 773, 782, 797, 798, 808, 809, 811, 877, 891, 902, 917, 928, 965, 974, 975, 989
Navaja Knife Case Hardened Blue Gem Tier 3 Patterns

Navaja Knife Case Hardened Blue Gem Tier 3 Patterns are where you can start to see large chunks of yellow start to come in, but on some Patterns, they have their own charm. Take the 632, pictured above. The gold tip gives it its own unique aesthetic, so it’s worth looking around the Navaja Knife Blue Gem Tier 3 Patterns to see if there’s any you actually prefer to the more expensive offerings.
- Navaja Knife Case Hardened Blue Gem Tier 3 Patterns: 29, 32, 67, 73, 92, 136, 185, 214, 256, 269, 330, 341, 377, 387, 418, 432, 466, 494, 499, 507, 522, 595, 615, 630, 632, 642, 655, 664, 727, 776, 793, 846, 847, 853, 868, 884, 889, 905, 942
Navaja Knife Case Hardened Blue Gem Tier 4 Patterns

The Navaja Knife Case Hardened Blue Gem Tier 4 Patterns come with all the same caveats as Tier 3 – less blue, but some will have unique aesthetics worth checking out. I’ll raise the same point as I did for Tier 2. The size of the Navaja Knife works in its favor here. There’s just less room for yellow on the knife, so even the low-tier Blue Gem Navaja Knives are great.
- Navaja Knife Case Hardened Blue Gem Tier 4 Patterns: 4, 11, 20, 21, 38, 42, 61, 68, 82, 86, 112, 130, 152, 198, 202, 208, 216, 244, 249, 254, 259, 308, 315, 352, 375, 400, 405, 442, 458, 470, 541, 547, 580, 594, 612, 631, 658, 670, 714, 717, 721, 767, 768, 799, 803, 823, 826, 841, 865, 881, 885, 888, 893, 901, 916, 924, 936, 945, 958, 964, 967, 979
What CS2 case drops a Navaja Knife Case Hardened Blue Gem?
You can get a Navaja Knife Case Hardened Blue Gem in the Danger Zone Case and Horizon Case.
Why is the Navaja Knife Case Hardened Blue Gem so rare in CS2?
Getting a Navaja Knife from a case is very rare as it is. The odds of it being Case Hardened (as opposed to another skin) are even lower. Then, you factor in the chances of it actually being a Blue Gem Pattern Template, and you begin to understand why Blue Gem Navaja Knives are so rare.
What is the best CS2 Navaja Knife Case Hardened Blue Gem pattern?
The best CS2 Navaja Knife Case Hardened Blue Gem Pattern is the 398.
How much does a Navaja Knife Case Hardened Blue Gem cost?
It depends on the tier. For example, there are seemingly only three 398s in existence, so you’re looking at thousands of dollars for that one. However, even some Tier 1 Blue Gem Navaja Knives can be found in the realm of around $1,000. Compare this to something like a Karambit Blue Gem, and it looks cheap in comparison.
How many Navaja Knife Case Hardened Blue Gem tiers are there?
There are four Navaja Knife Blue Gem tiers, but the 398 is considered to be outside of this system. If you count the 398 as “Tier 0,” then it’s technically five.
How do I know if my Navaja Knife Case Hardened is a Blue Gem?
You can normally tell by looking at it and seeing the amount of blue on the playside of the skin. However, that doesn’t tell you for definite. To check for sure, inspect your Navaja Knife Case Hardened in your inventory. Hover over the small I icon in the bottom-left corner of your screen and find the number titled Pattern Template. If the number matches any of the numbers in the above tiers, then you have a Navaja Knife Case Hardened Blue Gem.
How does float value affect Blue Gem Navaja Knives?
Float value affects both the appearance and monetary value of Blue Gem Navaja Knives. A worse float will look considerably more beaten up, even if it’s a Navaja Knife Blue Gem Pattern, and you can expect to pay less as a result. However, it’s the Pattern that ultimately affects the value the most.