Ruby is the prize variant of the Doppler series, where the marbled candy coat lands as a deep, fully red blade instead of the usual mixed swirl. On a butterfly knife that solid crimson runs the length of the flipping blade, and because these red pulls are uncommon they sit among the most coveted Doppler outcomes.
Butterfly Knife (Doppler Ruby): design, wear and market
Doppler phases
Doppler and Gamma Doppler are split into phases. Standard Doppler has Phase 1–4 plus the rare Ruby (red), Sapphire (blue) and Black Pearl. Gamma Doppler adds Emerald as its top phase.
The phase is part of the item and changes both the look and the value — Ruby, Sapphire, Emerald and Black Pearl trade well above the numbered phases. On this page the phase is shown in the name and selectable where variants exist.
Spectrum Case
