★ Survival Knife | Doppler | Sapphire

It is one phase of the Survival Knife Doppler finish, released on March 31, 2025 with the Spring Forward update. It drops from the Fever Case as a rare special item. The Survival Knife Doppler (Sapphire) runs from 0.00 to 0.08 in float, so it comes only in Factory New and Minimal Wear, and it has a StatTrak version.

Factory New peaked at $1,286 on April 15, 2025 and trades 79% below that peak. It is down 36% over the past year and down 17% over 90 days. Over the past year it traded between $269 and $554. Its all-time low was $257, on October 24, 2025. It first traded around $1,286 in April 2025 and is down 79% since. The CS2 price history API carries the full Survival Knife | Doppler (Sapphire) (Factory New) price history.

Minimal Wear costs 1.6 times as much as Factory New, the cheapest wear.

Steam asks the most at $374, 39% above the cheapest Factory New listing on CSFloat.

Doppler comes in four phases, Phase 1 to Phase 4, plus three rarer gem patterns: Ruby, Sapphire and Black Pearl. The pattern seed fixes the phase, and each phase trades as its own item with its own price. Black Pearl is the most expensive phase at $430, and Phase 3 the cheapest at $156.

11 Factory New copies are listed for sale across the four marketplaces. 16 Factory New copies sold in a recent 7-day window. Factory New is liquid and usually sells within a day.

The Doppler (Sapphire) finish also comes on the Bayonet, the Bowie Knife, the Butterfly Knife, the Falchion Knife and 13 other weapons. It counts toward the Doppler (Sapphire) index.