In short
Doppler has Phase 1–4 plus three gem variants: Ruby, Sapphire and Black Pearl. Gamma Doppler has Phase 1–4 plus Emerald. Each phase has its own paint index, so an inspect link tells you exactly which phase an item is.
Doppler phases
The original Doppler finish has four standard phases (Phase 1, 2, 3 and 4) and three rare gem variants: Ruby (red), Sapphire (blue) and Black Pearl (dark purple-black).
Gamma Doppler phases
Gamma Doppler also has Phase 1 to Phase 4, plus one gem variant: Emerald (green).
Why phases matter
Each phase uses its own paint index, so an inspect link tells you exactly which phase an item is. Our inspect decoder shows the paint index of any 2026-format link.
Knives with Doppler finishes
In our catalog you can open the Karambit | Doppler, Karambit | Gamma Doppler, Butterfly Knife | Doppler and Butterfly Knife | Gamma Doppler.
Phase-level pages with official images are planned once phase data is imported per paint index.