Doppler and Gamma Doppler are the only CS2 finishes that come in phases: the same skin with a different look. A Karambit | Doppler can be pink, deep blue, blood red or almost black, and those versions sell for very different prices, yet they all trade under one name. This guide shows every phase, side by side.
Doppler phases
Doppler has seven phases: four regular ones, and three solid-coloured "gems" that are far rarer.
- Phase 1: icy white and light blue with violet, the darkest of the four regular phases.
- Phase 2: pink and magenta, often the most wanted of the regular phases.
- Phase 3: blue and purple, with hints of teal.
- Phase 4: mostly blue, the coolest-looking regular phase.
- Ruby: solid, deep red. A gem.
- Sapphire: solid, deep blue. A gem.
- Black Pearl: dark violet, close to black, with lighter swirls. A gem.
Gamma Doppler phases
Gamma Doppler is Doppler's green counterpart. It has five phases: four regular ones in blues and greens, and one gem.
- Phase 1: white and pale blue with a touch of green.
- Phase 2: green and teal.
- Phase 3: pale green and blue, the lightest of the four.
- Phase 4: teal and green.
- Emerald: solid, saturated green. The Gamma Doppler gem.
Each picture is one example: every item's pattern is placed differently on the blade, so two items of the same phase can still look quite different.
Which skins have phases
Doppler comes on 18 knives: the Bayonet, Bowie Knife, Butterfly Knife, Falchion Knife, Flip Knife, Gut Knife, Huntsman Knife, Karambit, M9 Bayonet, Navaja Knife, Nomad Knife, Paracord Knife, Shadow Daggers, Skeleton Knife, Stiletto Knife, Survival Knife, Talon Knife and Ursus Knife. Every one of them has all seven phases.
Gamma Doppler comes on 10 knives, from the Karambit and M9 Bayonet to the Butterfly Knife, and on one gun: the Glock-18 | Gamma Doppler, the cheapest way to own a phase.
Every Doppler and Gamma Doppler knife only comes in Factory New and Minimal Wear, with floats from 0.00 to 0.08, and in StatTrak™ too. They drop as rare special items from cases such as the Chroma and Gamma cases: see each knife's page for its cases. The Glock-18 is the exception: it comes in every wear from Factory New to Battle-Scarred (floats 0.00 to 0.50), without StatTrak™.
How to tell which phase an item is
- The market name does not say it: every phase of a Factory New Karambit | Doppler is listed as ★ Karambit | Doppler (Factory New). Marketplaces show the phase as a separate tag or filter.
- Inspect it in game, or look at the listing's picture: the colours above are the giveaway, especially for the solid-coloured gems.
- Tools read the paint index, a number the game gives each phase. On the original knives, Ruby is 415, Sapphire 416, Black Pearl 417, and Phases 1 to 4 are 418 to 421; for Gamma Doppler, Emerald is 568 and Phases 1 to 4 are 569 to 572. Newer knives and the Glock-18 use other numbers for the same phases.
Why the phase matters for the price
The phase decides most of a Doppler's price. The gems are the rarest and sell for many times a regular phase, and among the regular phases Phase 2 and Phase 4 usually cost more than Phase 1 and Phase 3. Two listings under the same name can be worlds apart, so always check the phase before you buy or sell.
That also means a price list keyed by market name shows the cheapest listing of any phase, which is almost always a regular one. Our prices table compares 22 marketplaces by market name too: use it to find where the cheapest Doppler of a knife is listed, then check that listing's phase on the marketplace itself.