★ Ursus Knife | Doppler | Sapphire

It is one phase of the Ursus Knife Doppler finish, released on March 13, 2019. It drops from the Prisma Case as a rare special item. The Ursus 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 $2,596 on October 31, 2023 and trades 84% below that peak. It is down 29% over the past year and down 18% over 90 days. Its highest price of the past year was $937. Its all-time low was $393, on October 19, 2026. The CS2 price history API carries the full Ursus Knife | Doppler (Sapphire) (Factory New) price history.

Minimal Wear costs 1.4 times as much as Factory New, the cheapest wear.

Steam asks the most at $519, 26% above the cheapest Factory New listing on Youpin.

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 $650, and Phase 3 the cheapest at $199.

5 Factory New copies are listed for sale across the four marketplaces. 12 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.