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Case Hardened — Blue Gem

★ Survival Knife | Case Hardened · Blue Gem Pattern Tier Guide

152 patterns classified across 4 tiers. Each tier section below pairs a rendered example with the full seed list — click any seed to search live listings across our tracked marketplaces.

6 min read152 patterns documentedUpdated this weekby yesriskk (founder cs2search)

00Why patterns matter

Every ★ Survival Knife | Case Hardened · Blue Gem has the same paint_index — but the pattern seed (0–999) controls exactly how the dye lands on the blade. Two listings can have the same wear and float but look dramatically different.

The cards below compare a typical Unranked roll (seed #657) against the Tier-1 hero we picked (seed #316). Same skin, same phase, same wear band — pattern is the only difference.

Unranked Pattern#657

unranked
no pattern premium · the bulk of Case Hardened supply

Tier 1 Pattern example#316

premium
top-tier pattern — community-flagged
Why this mattersBoth knives share identical Steam metadata — Steam treats them as the same item. But buyers who know patterns will pay a premium for the T1 because the visual is unambiguously better. Pattern guides like this one make that premium visible.

About Blue Gem patterns

Survival Knife Case Hardened lays the marbled steel finish over a heavy fixed blade. The seed sets how much blue reaches the play side; the blue-dominant rolls are the Blue Gems.

Seed #403 is the #1 Survival Knife Blue Gem, its play side covered almost entirely in blue. The closely-related Paracord Knife shares this apex — the two blades carry near-identical Case Hardened geometry.

01T1Tier 1 — Best patterns

What makes a T1

The best patterns in this skin. Tightest symmetry, deepest coverage, and the visual hallmarks that separate top-shelf examples from everything else.

Search all T1 patterns on the marketplaces
Featured: pattern #316 — click image to zoom · toggle Front/Back
All T1 patterns (10)
T1169T1281T1316T1403T1456T1577T1583T1585T1634T1681

02T2Tier 2

What makes a T2

Very strong patterns — close to T1 quality but with one or two visual compromises (off-axis tip, slightly less coverage, or a less symmetric back).

Search all T2 patterns on the marketplaces
Featured: pattern #351 — click image to zoom · toggle Front/Back
All T2 patterns (15)
T255T258T2180T2210T2351T2447T2449T2556T2601T2628T2668T2704T2850T2880T2922

03T3Tier 3

What makes a T3

Above-average patterns. Recognisable as "good" but with a clear weakness compared to T1/T2 — useful for buyers who want a hint of pattern premium without paying T1 prices.

Search all T3 patterns on the marketplaces
Featured: pattern #872 — click image to zoom · toggle Front/Back
All T3 patterns (40)
T367T3103T3157T3162T3166T3170T3179T3187T3202T3239T3262T3286T3288T3336T3345T3349T3372T3383T3387T3393T3429T3430T3496T3516T3529T3533T3588T3624T3632T3698T3700T3797T3812T3837T3867T3872T3887T3915T3916T3954

04T4Tier 4

No example yet
A render will appear when a listing becomes available.
What makes a T4

The lower end of curated patterns. Still better than a random unranked roll, but the visual differentiator is subtle.

Search all T4 patterns on the marketplaces
All T4 patterns (85)
T410T414T484T488T491T4107T4108T4116T4124T4137T4151T4168T4176T4203T4212T4222T4227T4235T4241T4261T4269T4292T4294T4298T4299T4325T4363T4374T4386T4417T4428T4442T4503T4504T4507T4519T4523T4525T4526T4532T4537T4547T4560T4606T4610T4613T4619T4640T4641T4651T4665T4669T4670T4675T4680T4689T4693T4710T4715T4719T4740T4750T4760T4789T4790T4794T4805T4806T4807T4818T4820T4821T4828T4866T4869T4878T4879T4899T4902T4910T4941T4955T4959T4969T4973
Everything else — Unranked

The remaining ~850 paint_seeds fall outside the curated tiers. They make up the bulk of Phase 1 supply on every marketplace and don’t carry a pattern premium — what you see is what you get, like the baseline reference (seed #657) we used at the top of this guide. If a seed isn’t listed in T1–T4 or BTA above, treat it as Unranked.

Credits & sources

Pattern tier classification originally compiled by korenevskiy & Krieke (Steam Community Guide).

Pattern renders are independently generated from live marketplace listings.

This page combines public-domain pattern data with our own renders, live pricing, and cross-marketplace listing search.