CS2 Pattern Index Explained

Two identical skins in Counter-Strike 2 can have the same condition and almost identical float values, yet look completely different. The reason is the pattern index, which determines which part of a texture appears on a specific item and how it is positioned.

Patterns are especially important for Case Hardened, Fade, Marble Fade, Slaughter, and Crimson Web. In some cases, the right pattern index can significantly increase an item’s value. However, this does not apply to every finish. For example, Tiger Tooth patterns do vary, but there are almost no widely accepted expensive tiers.

In this guide, we will explain what the CS2 pattern index is, how to read it, and which skins it actually matters for.

What Is Pattern Index in CS2?, Pattern Index Is Not Necessarily Rarity, Case Hardened and Blue Gem, Fade: Pattern Index and Fade Percentage, Marble Fade: Fire and Ice, Slaughter: Diamond, Heart, and Other Patterns, Crimson Web: Number and Placement of Webs, Tiger Tooth: When Pattern Index Barely Matters, How to Check Pattern Index Before Buying, How Pattern Index Affects Price

What Is Pattern Index in CS2?

Pattern Index, also known as Pattern Template or Paint Seed, is a number from 0 to 999 assigned to an item. It is generated when the skin appears - for example, after opening a case, receiving a drop, or creating an item through a Trade Up Contract. Once assigned, the seed cannot be changed.

Pattern index should not be confused with float.

Float determines how worn an item is, while pattern index controls the placement of the design. Because of this, two Factory New versions of the same skin can have almost identical float values but look completely different.

At the same time, seed does not noticeably change the appearance of every skin. In some finishes, the distinction is minimal, making little impact on the value of the piece.

Pattern Index Is Not Necessarily Rarity

The key here is that just because something has an index like #661, it doesn’t mean that it’s rare.

There are 1,000 possible indexes, and the value depends on the appearance of the pattern for a certain seed on a specific model of a blade.

That means the same number can be famous on one skin and completely ordinary on another.

The best example is Case Hardened. For AK-47 | Case Hardened, pattern #661 is considered one of the most important and is known as the Scar Pattern. It covers most of the upper part of the weapon in blue. However, the list of top seeds for Karambit Case Hardened is completely different.

Case Hardened and Blue Gem

Case Hardened is the most famous example of how strongly pattern index can affect price.

The standard finish combines blue, purple, gold, and silver tones. However, some seeds place most of the blue on the most visible side of the item. These versions became known as Blue Gems.

For the AK-47, pattern #661 remains the most famous example. For the Karambit, #387 is one of the best-known patterns, with the play side of the blade appearing almost entirely blue.

However, there is no universal Blue Gem list. AK-47, Five-SeveN, Karambit, and other Case Hardened items all have their own tier lists.

That is why simply checking the seed is not enough when buying one - you need to look for a pattern ranking specifically for the item model you are interested in.

Fade: Pattern Index and Fade Percentage

On Fade finishes, the pattern index determines how the yellow, red-pink, and purple-blue gradient is distributed.

The Fade Percentage is also used to assess the skin value in the market along with the number of seeds. The more the percentage of the required color range is present in the visible part of the skin, the more valuable the skin will be. The best skins are often referred to as Full Fade or 100% Fade.

It should be noted that one pattern index value cannot be equated for all knives. The geometry of a Karambit, Bayonet, Butterfly Knife, or another blade is different, so Fade Percentage is calculated separately for each model.

That is why when buying a Fade, it is better to look at the seed, Fade %, and the actual in-game appearance together.

Marble Fade: Fire and Ice

On Marble Fade, the pattern index controls the placement of red, blue, and yellow colors.

Standard versions are often called Tricolor because all three colors are clearly visible on the blade.

The most famous collectible patterns are Fire and Ice - versions where the play side contains almost exclusively red and blue, with little or no yellow visible. On some knife models, these patterns are further divided into 1st Max, 2nd Max, and other categories depending on how much red is present.

There are also Fake Fire and Ice patterns. They look similar but contain a noticeable yellow section, usually closer to the base of the blade.

As with Blue Gems, the ranking of Marble Fade patterns depends on the knife model, so there is no universal list of the best Marble Fade seeds.

Slaughter: Diamond, Heart, and Other Patterns

On Slaughter knives, the pattern index moves the abstract dark design across the red blade.

Over time, players began identifying recognizable shapes within those lines:

• Diamond

• Heart

• Angel

• Bone / Dogbone

• Phoenix

Some of the most desirable versions have traditionally been those with a clear Diamond or a Diamond + Heart combination.

However, the Slaughter market is far less standardized than Case Hardened. Even knife pricing sources note that the premium for a particular pattern can vary significantly from one sale to another.

Because of this, visual appearance and actual recent sales matter more here than simply the name of the pattern.

Crimson Web: Number and Placement of Webs

On Crimson Web, the seed determines where the black web patterns appear across the red surface.

Collectors usually look for:

• large full webs;

• webs on the play side;

• well-centered webs;

• multiple clearly visible webs.

An item with a well-positioned large web can be worth more than a standard version in the same condition.

However, float is especially important for Crimson Web as well. A rare pattern index alone does not guarantee the highest price if the blade is heavily worn or the main web is difficult to see.

Tiger Tooth: When Pattern Index Barely Matters

Tiger Tooth also has a pattern index, so the placement of the dark stripes on the golden surface can vary slightly.

However, unlike Blue Gem or Fire and Ice, Tiger Tooth does not have a widely accepted system of rare and expensive seeds.

The community generally does not pay a significant premium purely for stripe placement. When valuing Tiger Tooth, the knife model, float, condition, and overall market price matter much more.

This is a good example of why having a pattern index does not automatically mean that a specific seed is worth paying extra for.

How to Check Pattern Index Before Buying

If you are considering an expensive patterned skin, it is better to check several factors at once:

1. Model and finish — the same seed can have very different value on different items.

2. Pattern Index — identify the exact number from 0 to 999.

3. Tier or pattern type — for example, Blue Gem, Full Fade, or Fire and Ice.

4. Float — a rare seed does not remove the impact of condition.

5. Play side — especially important for Case Hardened items and knives.

6. Sales history — actual transactions usually show the real premium better than theoretical pricing.

It is usually not necessary to verify the pattern index for normal skins. However, in Case Hardened, Fade, Marble Fade, Slaughter, and Crimson Web, neglecting the seed means underestimating the worth of the skin as a rare one.

CS2 Sport Gloves Guide: Prices, Patterns & Best Picks

How Pattern Index Affects Price

The pattern skins can roughly be classified under three main types.

High impact: Case Hardened, Fade, and some Marble Fade. A rare seed can significantly increase the price.

Moderate impact: Slaughter and Crimson Web. There are certain design variations that might fetch more, but the market lacks standardization.

Minimal impact: Tiger Tooth and many other finishes. Pattern index changes the appearance, but usually does not create a separate collectible category.

The main rule is simple: never evaluate a pattern index separately from the skin model. The value of Pattern 661 is not in the rarity of the number 661, but in the fact that with the AK-47 Case Hardened skin it provides the rarest Blue Gem pattern.

The combination of finishing + skin model + pattern index + float + pattern positioning makes the difference between a usual skin and its rare version.