Master Guide to M9 Bayonet Case Hardened Blue Gem Patterns & Rankings

The pattern index affects the location, color, and shape of the stains. The pattern variations with a predominance of blue clean stains on the play side "Blue Gem" are considered to be the rarest and the most expensive ones.
The pattern variations with 50%-60% of blue on the play side are also quite rare. The cheapest and the most common pattern variations are those with yellow blades or yellow blades with inclusions of blue covering up to 30% of the blade surface.
There is not a single definitive Blue Gem pattern for the M9 Bayonet in CS2. Instead, there are multiple Case Hardened patterns that are recognized by the CS2 community as 'Blue Gems' and are highly valued within the game's marketplace.
1 pattern - The legendary #601

The 601 Case Hardened Seed's rarity arises solely because it features a 92% spotless blue finish on the blade, making it one of the cleanest renditions of the Blue Gem series. This is the most valuable and sought-after M9 Bayonet Case Hardened pattern in existence.
20 patterns - Highest blue concentration

Rank 1 patterns feature the highest blue concentration after the #1 pattern. These elite Blue Gem patterns showcase exceptional blue coverage with minimal gold interference, making them extremely valuable and sought-after by collectors.
22 patterns - High blue coverage

Rank 2 patterns offer high blue coverage and represent premium value for collectors. These patterns provide impressive Blue Gem status while being more accessible than Rank 1 patterns.
44 patterns - Solid blue coverage

Rank 3 patterns provide solid blue coverage with good value for collectors seeking Case Hardened Blue Gem status at more affordable prices. These patterns offer 50%-60% blue coverage on the play side.
61 patterns - Entry-level Blue Gem

Rank 4 patterns provide entry-level access to the Blue Gem category at the most affordable prices while still maintaining Blue Gem classification in the Case Hardened finish.
Pattern #601 features 92% spotless blue finish - the cleanest Blue Gem rendition for M9 Bayonet.
Multiple patterns qualify as Blue Gems - there's no single definitive pattern like other knives.
50%-60% blue coverage patterns are considered rare and valuable in the marketplace.
Yellow blades with less than 30% blue coverage are the most common and affordable variants.
The M9 Bayonet's large blade surface makes Blue Gem patterns particularly striking and desirable.
Browse available M9 Bayonet Case Hardened skins and find your Blue Gem pattern
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