Not a Fade, not a Doppler
The name sounds like a Fade, but the finish is closer to Doppler. The difference is that Doppler knives come in separate phases, while the Marble Fade uses three colours on one blade. On the catalog image the Bayonet shows blue near the tip, gold and orange in the middle, and red near the guard, all with a marbled texture. The olive-green ridged handle is plain, so the blade carries the whole look.
The pattern decides the mix
On this finish the pattern number changes how the three colours are distributed along the blade, so one copy might show more blue and another more red. We don't list specific patterns or rank them; compare real screenshots of a specific copy. The patterns guide explains what to look at.
Float and related skins
The float range is 0–0.08, so copies are Factory New (up to 0.07) or Minimal Wear, and wear hardly shows. The knife shares its cases with the Karambit | Doppler and the M9 Bayonet | Doppler. Gun skins from the same cases include the UMP-45 | Primal Saber.