Everything you need to know about Case Hardened and Blue Gems

CS2 Case Hardened and Blue Gem Guide
CS2 Case Hardened & Blue Gem Guide

Have you ever wondered what the most expensive knife and the most expensive AK-47 in Counter Strike have in common? They are both Case Hardened skins!

In general, there are subtle differences between weapons (such as the AK-47 Case Hardened) and knives that affect the skin's rating. In our article, we will therefore look at both Case Hardened knives and weapons to give you a complete overview.

What makes Case Hardened Skins so special

The special feature of case hardened skins lies in their origin from real metallurgy. Case hardened skins reflect the colors that are created during the hardening process of metal. But this is where the pattern index comes into play.

The amount of blue visible on the skin varies depending on the pattern index. A higher proportion of blue makes the skin more desirable and therefore more valuable. If the term "pattern" is not quite clear to you, don't worry. We have a special pattern guide that clears up any ambiguities.

As already mentioned, the blue on case hardened skins is the decisive factor for their rating. A real highlight among the case hardened skins are the so-called "Blue Gems". These are skins that have a particularly high proportion of blue. As a rule, we speak of blue gems if the blue content is above the range of 55-65%, although this also depends on the weapon or knife in question.

Karambit Case Hardened Blue Gem
Karambit Case Hardened Blue Gem - Pattern Index #888

Blue Gems are highly coveted in the community as they are not only aesthetically pleasing but also have a considerable value.

An alternative option, although not as popular as Blue Gems, is Gold Gems. This skin is characterized by the fact that it has almost no blue. We have already written a dedicated article for anyone interested in this variant of the Case Hardened skins. You can find it here: "Everything you need to know about Gold Gems in Counter Strike".

How do I find out how well my case is hardened?

Assessing the quality of a Case Hardened skin requires an understanding of the specific weapon or knife. In general, Case Hardened skins are divided into different tiers, with Tier 1 containing the most desirable skins. The assignment to the individual tiers is based on the blue content, whereby a completely blue skin is assigned to Tier 1, for example. But how can you find out which tier your skin falls into?

One option is to use tables with pattern indices. You simply compare the pattern index of your own skin (How to find out your pattern index) with those in the table. For example, if your pattern index is 559 and this index is under Tier 2 in the table, you know that your skin is very good and you can use it for can probably sell above market price. Here you will find tables with all pattern indices for all Case Hardened skins:

Alternatively, browser extensions such as CSGO Trader can be installed. These show which animal your own skin belongs to in the Steam inventory.

Finally, there is the method of personal estimation, in which the blue component of the skin is assessed subjectively. However, we recommend this method to more experienced Counter-Strike traders, as it requires a certain amount of expertise to correctly estimate the proportion of blue and classify the skin accordingly.

AK-47 Case Hardened
AK-47 Case Hardened

The AK-47 Case Hardened - A prestigious skin

In the Counter-Strike community, the AK-47 Case Hardened enjoys a particularly prominent reputation and is often considered one of, if not the most popular skin.

With the AK Case Hardened, the placement of the blue on the weapon comes into play in addition to the blue content factor. The rule here is: the higher up the blue, the better the skin.

Due to the large surface area of the AK-47, there are many variations of the case hardened skin. This variety can be roughly divided into three categories: Blue, Gold and Mixed. Each category has its own charms and attracts different types of collectors. The fascinating palette of the AK Case Hardened makes it a unique skin in the Counter Strike world.

The AK Case Hardened can be found in the CS:GO Weapon Case and has therefore been in the game for a very long time, since 2013 to be precise, and is one of the oldest CS:GO skins.

AK-47 Blue Gem - These are the patterns

The AK-47 Case Hardened enjoys a lot of attention within the community not only because of its popularity, but also because of its unique patterns. There are certain patterns that have been named by the community, here are some exemplary patterns:

Scar: #661 #321 #670 - The name comes from a golden "scar" in the blue of the skin

AK-47 Case Hardened Blue Gem - Scar
AK-47 Case Hardened Blue Gem - Scar Pattern Index #661

Blue Mag: #587 #502 - The magazine is completely covered in blue on these skins

AK Case Hardened - Blue Mag
AK Case Hardened - Blue Mag Pattern Index #587

Blue Barrel: #151 # 856 - Here the barrel of the gun is completely covered in blue

AK Case Hardened - Blue Barrel
AK Case Hardened - Blue Barrel Pattern Index #151

These are just some of the many possible patterns that make the AK-47 Case Hardened so unique. To give you a comprehensive overview, you will find a table below that shows the classification of all AK Case Hardened indices into the different tiers.

Table with all Ak Case Hardened indices (Complete table)

AnimalPattern index
The best index661
Tier 1151, 168, 179, 321, 387, 555, 592, 670, 760, 809, 955
Tier 24, 13, 28, 32, 65, 74, 82, 92, 103, 122, 139, 147, 172, 189, 205, 228, 256, 323, 341, 426, 430, 442, 463, 479, 512, 525, 526, 532, 541, 571, 578, 605, 617, 627, 695, 698, 708, 713, 750, 752, 791, 828, 844, 868, 887, 888, 892, 903, 905, 922, 950, 969, 978, 996
Tier 311, 34, 81, 112, 236, 278, 310, 322, 363, 375, 381, 413, 428, 429, 434, 450, 497, 519, 557, 586, 610, 647, 685, 689, 690, 711, 721, 733, 754, 770, 782, 819, 823, 849, 856, 862, 872, 878, 917, 935, 961, 1000
Tier 42, 73, 126, 130, 169, 178, 182, 194, 200, 209, 230, 248, 242, 269, 296, 306, 325, 344, 397, 407, 418, 420, 431, 447, 453, 456, 458, 468, 470, 481, 493, 494, 507, 522, 575, 577, 622, 648, 664, 681, 694, 715, 724, 775, 788, 795, 798, 803, 842, 847, 879, 891, 927, 965, 985

What to look out for with case-hardened knives in particular

Case hardened skins are actually available for every knife in Counter-Strike.

A crucial aspect of case hardened knives is the distinction between the playside and backside. The playside is the side of the knife that is visible in play when it is held in the hand. It is therefore particularly good if the blue is present on this side. As with other Case Hardened skins, the rule of thumb for knives is: the more blue, the more desirable and valuable.

Case hardened knives Playside and Backside
Karambit Case Hardened - Blue Gem - Playside and Backside

In contrast to the Ak-47 Case Hardened, the focus with knives is less on the positioning of the blue (apart from the fact that the blue should be on the playside), but rather on the percentage of blue. The blue percentage on the playside is considered, while the blue percentage on the backside is usually ignored. However, an intense blue on the backside can also be considered a bonus and can therefore increase the overall value of the case-hardened knife.

Blue gems for Case Hardened knives

With so many case hardened knives available, we want to make sure that this article remains clear. Therefore, we have created a separate article that provides detailed tables on the pattern indices and other relevant information for each knife.

If you want to learn more about the Case Hardened knife rankings, including each pattern index, you can read our article Case Hardened Knife Tier List (Each Pattern Index) visit.

For which weapons are there hardened skins in CS Case?

In addition to the AK and the knives, there are two other weapons that have Case Hardened skins. These are the Mac-10 Case Hardened and the Five-SeveN Case Hardened.

List of all Case Hardened skins available in Counter Strike:

  • AK-47
  • Mac-10
  • Five-SeveN
  • All knives

As we have already covered the AK-47 and the knives, we will now provide brief information on the other two weapons.

Mac-10 (Complete table with all Mac-10 Case Hardened Indices)

Mac-10 Case Hardened Blue Gem
Mac-10 Case Hardened Blue Gem - Pattern Index #95

The Mac-10 Case Hardened has been in Counter Strike since 2021 and was added with the Operation Riptide update.

It can be drawn from the 2021 Dust 2 Collection.

Here is a table in which all pattern indices of the Mac-10 Case Hardened are assigned to an animal:

AnimalPattern index
The best index95
Tier 118, 114, 222, 239, 315, 406, 546, 587, 667, 898
Tier 26, 29, 80, 144, 147, 182, 195, 199, 251, 285, 292, 311, 328, 345, 358, 379, 381, 400, 414, 475, 503, 570, 598, 629, 652, 788, 807, 885, 889, 899, 924, 959, 964, 972
Tier 38, 10, 19, 34, 41, 58, 72, 76, 107, 108, 111, 117, 119, 127, 138, 153, 156, 185, 190, 208, 214, 241, 242, 255, 295, 309, 313, 346, 349, 369, 376, 378, 390, 399, 402, 403, 424, 434, 436, 453, 457, 458, 464, 473, 501, 502, 523, 525, 528, 553, 561, 566, 573, 579, 602, 604, 633, 644, 657, 658, 669, 699, 705, 707, 716, 720, 735, 748, 751, 801, 808, 811, 831, 835, 858, 871, 880, 881, 933, 944, 960
Tier 47, 13, 22, 24, 27, 32, 52, 56, 59, 61, 67, 78, 88, 103, 116, 118, 128, 135, 136, 141, 143, 159, 162, 163, 164, 173, 176, 180, 191, 198, 203, 206, 220, 250, 253, 256, 264, 269, 273, 275, 279, 280, 282, 283, 293, 299, 306, 314, 316, 332, 342, 356, 362, 367, 371, 372, 373, 398, 421, 425, 429, 430, 440, 441, 442, 443, 445, 451, 455, 456, 462, 466, 489, 499, 500, 506, 507, 513, 518, 531, 533, 560, 569, 577, 583, 586, 612, 613, 615, 617, 618, 623, 630, 632, 640, 650, 655, 672, 679, 703, 704, 709, 710, 714, 715, 721, 741, 746, 747, 749, 753, 764, 768, 778, 785, 792, 793, 804, 806, 819, 829, 830, 837, 838, 839, 847, 859, 866, 867, 873, 877, 894, 897, 904, 913, 917, 919, 922, 923, 926, 928, 931, 958, 968, 979, 982, 990, 995

Five-SeveN (Complete table with all Five-SeveN Case Hardened Indices)

Five-SeveN Case Hardened Blue Gem
Five-SeveN Case Hardened Blue Gem - Pattern Index #278

The Five-SeveN Case Hardened has been in the game since 2013 and was added to the game with The Arms Deal 2 update. It can therefore also be unboxed in the Arms Deal 2 Collection or in the CS:GO Weapon Case 2.

Here is a table in which all pattern indices of the Five-SeveN Case Hardened are assigned to an animal:

AnimalPattern index
The best index278
Tier 1189, 363, 532, 648, 689, 690, 768, 868, 872
Tier 225, 151, 177, 215, 321, 631, 670, 700, 724, 875, 879, 888
Tier 313, 28, 101, 103, 126, 265, 344, 369, 381, 387, 413, 426, 428, 430, 434, 450, 468, 555, 557, 627, 661, 770, 791, 809, 823, 844, 849, 874, 905, 927, 935, 955, 969, 979
Tier 44, 14, 61, 72, 81, 87, 112, 122, 125, 168, 174, 179, 187, 262, 273, 305, 310, 325, 333, 383, 414, 447, 456, 497, 512, 525, 526, 571, 577, 592, 628, 640, 685, 715, 750, 760, 828, 833, 843, 862, 878, 887, 902, 922, 948, 951, 985
Tier 51, 9, 29, 34, 55, 67, 74, 79, 82, 92, 113, 121, 136, 137, 140, 141, 142, 147, 148, 149, 159, 169, 171, 172, 173, 180, 182, 193, 197, 198, 200, 203, 205, 208, 209, 214, 220, 227, 235, 236, 242, 249, 261, 279, 286, 287, 303, 312, 316, 319, 322, 332, 349, 358, 371, 372, 376, 389, 390, 396, 397, 398, 407, 408, 429, 436, 442, 453, 459, 463, 466, 470, 471, 479, 495, 499, 500, 508, 509, 515, 528, 531, 539, 545, 547, 558, 573, 575, 578, 579, 586, 588, 589, 598, 612, 616, 617, 625, 630, 632, 635, 638, 642, 643, 645, 647, 658, 667, 681, 702, 713, 716, 717, 720, 723, 727, 733, 743, 749, 752, 753, 758, 762, 782, 788, 795, 797, 804, 808, 814, 822, 824, 838, 839, 841, 846, 852, 853, 854, 855, 856, 877, 889, 919, 921, 924, 926, 938, 953, 961, 964, 967, 970, 975, 989, 997

Why are Blue Gems so expensive?

The astronomical prices achieved by some Blue Gems are hard to ignore. The most expensive AK-47 Case Hardened changed hands for an impressive 400,000 dollars, while the most expensive Karambit worth a whopping 1.5 million dollars is. But why do these skins achieve such astronomical values?

Best AK-47 Case Hardened
The Best AK-47 Case Hardened

Blue Gem skins are extremely sought-after, but at the same time incredibly rare. Demand far exceeds supply. The odds of pulling the best AK Blue Gem pattern are a vanishingly low 1 in 1000. What's more, you have to get an AK Case Hardened from the crate in the first place, for which the probability is only 3.2%. This AK must also be brand new, which in turn corresponds to a probability of around 14.6%. The overall probability of getting hold of such an AK-47 Blue Gem is therefore around 0.00047%. This impressively explains why these skins are so incredibly expensive.

We would like to add that many enthusiasts now see CS skins as an investment. Particularly solid skins such as the AK Case Hardened are specifically traded as long-term investments, which is driving prices up further. The combination of scarce availability, high demand and the growing trend of seeing CS skins as valuable investments is driving prices up.

AK-47 Case Hardened Price History Diagram
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