The Ursus Knife Case Hardened is one of the more popular knives in CS2 with the Case Hardened finish. Its wide blade makes the metal pattern highly visible, and some patterns with dominant blue coloration are among the most desirable variants of this skin.
As with other skins in this series, the appearance of the Ursus Knife depends on the pattern seed, a number from 1 to 1000 that determines how the texture is distributed across the blade.
Most seeds generate a mix of gold, purple, and blue areas. However, only a small portion of patterns feature high blue coverage, these variants are referred to as Blue Gems.
Ursus Knife Blue Gem
Every Ursus Knife Case Hardened uses the same texture, but its distribution changes depending on the seed.
Key information:
- the pattern seed ranges from 1 to 1000,
- only a small number of seeds generate patterns with a dominant blue color,
- for the Ursus Knife, the most important factor is blade coverage on the playside,
- the larger the area of pure blue color, the higher the collectible value.
Due to its wide blade, the Ursus Knife often displays very high-contrast Case Hardened patterns, which makes high-quality Blue Gems especially valued by collectors.
Ursus Knife Blue Gem Seed Ranking
The trading community divides Case Hardened patterns into three quality tiers.
Tier 1 (T1)
The best Blue Gem patterns with the highest blue coverage.
Tier 2 (T2)
Patterns with a large amount of blue but with a greater presence of gold or purple.
Tier 3 (T3)
Seeds with smaller blue areas that may still look visually attractive.
Out of 1000 possible seeds, only a small fraction generate Ursus Knife Blue Gem patterns.
Key Ursus Knife Case Hardened Seeds
Tier 1 – Best Ursus Knife Blue Gem Seeds
#494 – 84.9%
#917 – 78.2%
#891 – 76.6%
#652 – 74.6%
#770 – 72.5%
#112 – 72.0%
#575 – 64.6%
#403 – 64.6%
#169 – 62.4%
#618 – 59.5%
#58 – 59.1%
#681 – 57.0%
Tier 2 – Very Good Ursus Knife Blue Gems
#838 – 85.5%
#330 – 83.1%
#371 – 77.3%
#510 – 76.8%
#488 – 75.5%
#638 – 75.5%
#808 – 74.0%
#283 – 77.1%
#868 – 70.8%
#881 – 70.2%
#798 – 70.2%
#811 – 70.0%
#694 – 77.6%
#468 – 51.9%
#631 – 61.2%
#643 – 64.3%
#130 – 64.1%
#721 – 64.3%
#702 – 57.6%
Tier 3 – Weaker Ursus Knife Blue Gems
#182 – 81.4%
#749 – 75.2%
#170 – 72.5%
#496 – 70.6%
#664 – 76.1%
#38 – 67.9%
#841 – 67.0%
#907 – 66.1%
#61 – 64.0%
#248 – 61.2%
#528 – 62.5%
#858 – 62.7%
#585 – 59.4%
#38 – 67.9%
#576 – 39.5%
The percentage of blue color on the blade is one of the most important indicators of Blue Gem quality. In practice, the distribution of color on the playside is equally important, as this is the most visible part of the knife during gameplay.
Table of Key Seeds
| Tier | Seed | Blue color |
| T1 | #494 | 84.9% |
| T1 | #917 | 78.2% |
| T1 | #891 | 76.6% |
| T1 | #652 | 74.6% |
| T1 | #770 | 72.5% |
| T1 | #112 | 72.0% |
| T2 | #838 | 85.5% |
| T2 | #330 | 83.1% |
| T2 | #371 | 77.3% |
| T2 | #510 | 76.8% |
| T2 | #488 | 75.5% |
| T2 | #638 | 75.5% |
Ursus Knife Blue Gem Statistics
- there are 1000 possible seeds in Case Hardened skins,
- only a small fraction of them generate Blue Gem patterns,
- the Ursus Knife is one of the knives where Blue Gems look especially good due to its wide blade,
- the price of a skin depends primarily on the pattern seed, and only secondarily on float.
In the case of the Ursus Knife Case Hardened, a good seed can significantly increase the knife’s value. Even a Field-Tested example with an attractive Blue Gem pattern can be much more expensive than a standard Factory New version.



