Among knife finishes, Gamma Doppler stands out for its layered, gem-like electroplated look. Phase 2 is not just a color swap: it sits on its own finish index in the series, so collectors and traders treat it as a distinct identity from Phase 1, 3, or 4. Valve’s official blurb frames it as black and silver metallic paint blended in a marble vein, softening how “dangerous” the blade feels while keeping the surface busy and reflective.

Release

On June 15, 2016, the Counter-Strike blog rolled out the Gamma Exposure update. That drop introduced the Gamma Case and, with it, Gamma Doppler as a knife finish option. The Phase 2 variant on this page maps to finish catalog 570.

Designer

Valve handled the art in-house. Community listings consistently mark it as official rather than a Steam Workshop submission.

Origin case

It debuted tied to the Gamma Case, launching alongside the rest of the Gamma content wave in case openings and the broader drop tables. For many players, it became the knife finish that defines that update.

What defines the skin

• Category: Knife
• Internal finish name: am_gamma_doppler_phase2
• Display name: Knife | Gamma Doppler (Phase 2)
• Rarity: Mythical
• Finish type: Multi-color electroplate
• Float range: 0.00–0.08 — essentially Factory New and Minimal Wear territory; battle-scarred-style wear tiers are not part of the roll

The preview asset uses the Shadow Daggers silhouette. That knife model only entered general drop pools later, from September 21, 2021 (Operation Riptide). The 2016 finish debut and 2021 Shadow Daggers drop eligibility are two timelines worth keeping separate if Shadow Daggers are your main play knife.

One finish ID applies across many knife types. When you swap models, marble placement, edge highlights, and how much “gem” shows on the blade follow the mesh—never judge Phase 2 from another phase’s inspect screenshot.

Why it matters when you buy

Inspect in-game first. Phase 2 lives or dies on where the dark base, silver streaks, and bright doppler pockets land on your blade length and handle transition. Because floats cap out around 0.08, the gap between a low float Factory New and a Minimal Wear piece shows up fast on edges, bevels, and background tone—there is no wide band of “good enough” battle wear to hide scuffs.

For price checks and long-term holds, compare listings on C5GAME and the Steam Community Market, but let the live inspect beat any thumbnail. If you main Shadow Daggers, factor Riptide-era availability into how you hunt drops versus buying a specific Phase 2 pattern outright.