Doppler Phases: Ruby, Sapphire, Black Pearl & Emerald

Phases are paint indexes, not seeds

Doppler is unusual: its variants are not created by the paint seed but by the paint index - the internal ID of the finish itself. Each Doppler knife is minted as exactly one phase, fixed forever. That makes phase identification 100% objective: read the paint index and you know the phase, no debate, no tier list.

All Dopplers are also capped at 0.08 maximum float, which is why they only exist in Factory New and Minimal Wear.

The complete paint index table

Rarity and the price ladder

When a Doppler is unboxed, the phase is rolled with heavily uneven odds. The solid-color gems (Ruby, Sapphire, Black Pearl, and Emerald for Gamma) are far rarer than the regular phases, and the market prices them accordingly:

• Sapphire and Ruby sit at the top - typically several times the price of the same knife in a regular phase, with Sapphire usually the most expensive.
• Black Pearl is the rarest roll of the classic Doppler set and trades between the gems and the phases, with strong collector demand.
• Among regular phases, Phase 2 (pink-heavy playside) is generally the most desired and most expensive; Phases 1, 3 and 4 trade close to each other below it.
• Gamma Doppler Emerald is one of the most valuable knife finishes in the entire game, often rivaling or beating Sapphire.

Within a phase, normal float rules still apply: a 0.003 Sapphire beats a 0.07 Sapphire. Gem + near-zero float is the jackpot combination.

Identifying phases visually

• Ruby: uniform red across the whole blade. If you can see purple swirls, it is a phase, not a Ruby.
• Sapphire: uniform bright blue. Phase 4 can look blue-ish in screenshots - the swirl pattern gives it away.
• Black Pearl: almost black at rest, with a deep purple-green shimmer at angles.
• Emerald (Gamma only): uniform green with no marbling.

Screenshots can be angled to exaggerate a phase's best side. The paint index does not lie - check the badge or the index before paying gem money.