About the Butterfly Knife | Doppler
The Butterfly Knife | Doppler is one of the most sought-after knives in CS2. It was added to CS:GO in March 2017 with the Spectrum Case, which brought the Chroma finishes to the Butterfly Knife for the first time.
It combines the most popular knife animations in the game with the Doppler finish, a metallic candy-paint effect that comes in seven phases. Each phase has its own colors and its own price, from the common Phase 1 to the rare Ruby, Sapphire, and Black Pearl.
This page covers the Butterfly Knife Doppler as a whole. Each phase also has its own page with its own listings, linked below. The wear tabs at the top of this page show the current price for each condition.
Design
The Doppler finish uses candy-apple paint over a chrome base, so the blade shines and shifts color as it moves. On the Butterfly Knife, the finish covers the blade, and the split handle shows the knife's signature flip animation. The colors on this page break down as mostly blue, with black, grey, and cyan.
The look of any copy depends mainly on its phase. Within a phase, the exact pattern shifts the colors slightly from one knife to the next.
Butterfly Knife Doppler Phases
The Doppler comes in seven phases. Pricempire lists each one separately, so you can compare prices phase by phase.
- Phase 1. Mostly dark, with pink and purple patches.
- Phase 2. The most pink and purple of the regular phases, and the most searched-for.
- Phase 3. Green and blue tones.
- Phase 4. Mostly blue, sometimes with purple.
- Ruby. A solid red blade. One of the three rare gem phases.
- Sapphire. A solid blue blade. One of the rarest and most valuable phases.
- Black Pearl. A dark, near-black blade with purple and blue highlights. The third gem phase.
The gem phases are priced far above the regular ones, so always check which phase a listing is before you compare prices.
How to Get the Butterfly Knife | Doppler
There are three ways to get a Butterfly Knife | Doppler in CS2.
- Buy it from a marketplace. This is the only route that lets you choose the phase, which makes it the route almost every buyer takes. The offers at the top of this page show every marketplace with a listing.
- Open a case. The Butterfly Knife | Doppler drops from the Spectrum Case and the Spectrum 2 Case. Knife drops are rare, at around 0.26% per case, and the phase you get is random.
- Trade up to it. Since October 2025, a trade-up contract using Covert skins can produce a knife from an eligible case.
Wear Conditions and Float
The Butterfly Knife | Doppler has a float range from 0.00 to 0.08, so it only exists in two wear conditions: Factory New (FN) and Minimal Wear (MW). There is no Field-Tested, Well-Worn, or Battle-Scarred version.
Because the range is so tight, wear barely shows, and the phase matters far more than the float. Most copies are Factory New, and Minimal Wear covers only 0.07 to 0.08.
Switch between the two conditions using the tabs above. Each one has its own listings and price history.
Variants
The Butterfly Knife | Doppler comes in a standard version and a StatTrak™ version, which counts your kills with the knife. Pricempire lists each version separately. There is no Souvenir version.
What Drives the Price of the Butterfly Knife | Doppler
- Phase. The biggest factor by far. Ruby, Sapphire, and Black Pearl sit well above the regular phases, and among those, Phase 2 and Phase 4 usually carry a premium.
- Pattern within a phase. Some patterns show more of the most wanted colors, which can add value.
- Float. With only two conditions, the exact float matters more than the wear name.
- StatTrak™. The StatTrak™ version is scarcer than the standard one and priced separately.
- The Butterfly Knife itself. It is one of the most wanted knife models in CS2, which lifts every finish on it.
- Case supply. How often the Spectrum cases are opened decides how many new knives enter the market.
Compare the offers above before you buy or sell, and set a price alert if you are waiting for a particular level.
Similar Skins
If you like the Butterfly Knife | Doppler, these are the closest alternatives.
- Butterfly Knife | Gamma Doppler. The Butterfly Knife | Gamma Doppler is a different finish with green phases and an Emerald gem phase, often confused with the Doppler.
- The vanilla. The standard Butterfly Knife has no finish and no phase to check.
- Doppler on other knives. The Talon Knife | Doppler and Ursus Knife | Doppler carry the same finish and phases.
- More choice. Browse all Butterfly Knife skins on Pricempire.
Frequently Asked Questions
How much is a Butterfly Knife Doppler?
It depends on the phase, the condition, and whether it is StatTrak™. The phase pages linked above show the current lowest price for each phase, and the price history shows how they have moved.
What are the Butterfly Knife Doppler phases?
There are seven: Phase 1, Phase 2, Phase 3, Phase 4, Ruby, Sapphire, and Black Pearl. Ruby, Sapphire, and Black Pearl are the rare gem phases.
What is the best Butterfly Doppler phase?
The Sapphire and Ruby are the most valuable, followed by the Black Pearl. Among the regular phases, Phase 2 is usually the most popular.
What is the difference between the Doppler and Gamma Doppler?
They are different finishes. The Doppler comes in pink, purple, blue, and red phases from the Spectrum cases. The Gamma Doppler comes in green phases with an Emerald gem phase, and it has its own page.
What case is the Butterfly Knife Doppler in?
The Spectrum Case and the Spectrum 2 Case.
What is the float range of the Butterfly Knife | Doppler?
0.00 to 0.08. It is only available in Factory New and Minimal Wear.
Does the Butterfly Knife | Doppler come in StatTrak™?
Yes. A StatTrak™ Butterfly Knife | Doppler exists and is listed separately. There is no Souvenir version.
When was the Butterfly Knife | Doppler released?
March 2017, in CS:GO, with the Spectrum Case. It is still available in CS2.
Where can I buy a Butterfly Knife | Doppler?
The offers at the top of this page list every marketplace with a Butterfly Knife Doppler for sale. Check the phase on any listing before you buy.