🌈 What is a Doppler?
Doppler phases are one of the most confusing — and most valuable — finishes in CS2. Each Doppler knife can appear in multiple phases, and the difference between a common Phase 1 and a rare Sapphire can mean thousands of dollars in value. This guide explains exactly how Doppler phases work in CS2, how to identify them correctly, and how to avoid costly mistakes when trading or buying.
In Counter-Strike 2, the Doppler finish is unique because it is determined by a hidden Pattern Index rather than float alone. Every Pattern Index (1–999) produces a specific color distribution, which places the knife into one of several Doppler phases: Phase 1, Phase 2, Phase 3, Phase 4, or one of the rare variants such as Ruby, Sapphire, or Black Pearl. Understanding these phases is essential for accurate pricing and safe trading.
Among standard Doppler phases, Phase 2 is generally the most desirable due to its vibrant pink and purple colors, while Phase 4 is popular for its blue-dominant appearance. Rare variants completely change the value hierarchy: Sapphire Dopplers (full blue) are typically the most valuable, followed closely by Ruby Dopplers (full red), with Black Pearl being extremely rare and harder to verify from screenshots alone.
This guide covers:
- All CS2 Doppler phases (P1–P4) and what they look like
- Rare variants: Ruby, Sapphire, Black Pearl
- Premium patterns like Max Pink and Max Blue
- Common scams such as Fake Sapphire listings
- How float impacts Doppler pricing
For a fast, reliable check, use the SteamAnalyst Loadout Builder & Doppler Phase Checker to verify phase by Pattern Index before you buy or trade.
Featured: Karambit Doppler
The Karambit is one of the most iconic Doppler knife types. Its curved blade showcases the swirling Doppler pattern beautifully, making it highly desirable among collectors.
Price Range: $1,783 - $7,412 (FN)
📊 Doppler Phases Overview
Standard Phases (Phase 1-4)
| Phase | Primary Colors | Rarity | Relative Value |
|---|---|---|---|
| Phase 1 | Black + Pink | Common | Base value |
| Phase 2 | Pink + Purple | Common | +10-30% over P1 |
| Phase 3 | Black + Blue/Green | Common | -5% to base |
| Phase 4 | Blue + Black | Common | +5-20% over P1 |
Rare Variants
| Variant | Color | Rarity | Value Multiplier |
|---|---|---|---|
| Ruby | Full Red | Very Rare | 10-20x standard |
| Sapphire | Full Blue | Very Rare | 15-30x standard |
| Black Pearl | Dark Purple/Green | Extremely Rare | 8-15x standard |
🖤 Phase 1 (P1)
Identification
- Dominant colors: Black and pink
- Appearance: Dark base with pink/magenta highlights
- Pattern variation: "Max Pink" patterns have more pink coverage
Max Pink P1 (Premium Patterns)
Some Phase 1 patterns display significantly more pink than others:
| Knife | Top Max Pink Patterns |
|---|---|
| Karambit | 412, 602, 638, 763, 913 |
| M9 Bayonet | 19, 138, 412, 633, 951 |
| Butterfly | 256, 412, 509, 763, 913 |
| Bayonet | 138, 412, 509, 763, 870 |
Value: Max Pink P1 patterns can command 20-50% premium over average P1.
Fake Black Pearl (P1)
Certain P1 patterns appear very dark with minimal pink, resembling Black Pearl. These are worth 10-30% more than standard P1, but are not true Black Pearls — always verify with a pattern checker.
💗 Phase 2 (P2)
Identification
- Dominant colors: Pink and purple
- Appearance: Most colorful phase, vibrant pink/purple swirls
- Most valuable standard phase due to color appeal
📊 Want live pricing? Check current listings and history on SteamAnalyst: Karambit Doppler prices or market trends.
Max Pink P2 (Premium Patterns)
| Knife | Top Max Pink Patterns |
|---|---|
| Karambit | 146, 269, 413, 579, 888 |
| M9 Bayonet | 146, 269, 413, 579, 794 |
| Butterfly | 146, 269, 413, 540, 888 |
Value: Max Pink P2 typically commands 30-60% premium over average P2.
🌑 Phase 3 (P3)
Identification
- Dominant colors: Black with blue/green accents
- Appearance: Darkest standard phase, subtle colors
- Least valuable standard phase
Value: P3 typically sells at or slightly below Phase 1 prices.
💙 Phase 4 (P4)
Identification
- Dominant colors: Blue and black
- Appearance: More blue than other phases
- Popular choice for collectors who like blue
Max Blue P4 (Premium Patterns)
| Knife | Top Max Blue Patterns |
|---|---|
| Karambit | 116, 219, 387, 463, 891 |
| M9 Bayonet | 116, 219, 432, 601, 891 |
| Butterfly | 116, 219, 387, 463, 601 |
Fake Sapphire (P4)
Extremely blue P4 patterns that resemble Sapphire. Worth 50-100%+ premium over standard P4, but not true Sapphires — always verify.
❤️ Ruby
Identification
- Color: Full, vibrant red coverage
- No black or other colors on the blade
- Extremely valuable — one of the most sought-after finishes
Price Ranges (FN, approximate)
| Knife | Ruby (FN) |
|---|---|
| M9 Bayonet | $8,970 |
| Butterfly Knife | $8,217 |
| Karambit | $7,285 |
| Talon Knife | $3,945 |
| Bayonet | $3,495 |
| Skeleton Knife | $3,200 |
| Flip Knife | $2,471 |
| Stiletto Knife | $2,392 |
| Ursus Knife | $2,109 |
| Nomad Knife | $1,800 |
| Huntsman Knife | $1,691 |
| Survival Knife | $1,500 |
| Paracord Knife | $1,400 |
| Bowie Knife | $1,212 |
| Falchion Knife | $1,057 |
| Navaja Knife | $703 |
| Gut Knife | $674 |
| Shadow Daggers | $662 |
💎 Sapphire
Identification
- Color: Full, vibrant blue coverage
- No black or other colors on the blade
- Most valuable standard Doppler variant
Price Ranges (FN, approximate)
| Knife | Sapphire (FN) |
|---|---|
| Butterfly Knife | $11,135 |
| M9 Bayonet | $10,389 |
| Karambit | $7,412 |
| Bayonet | $4,175 |
| Talon Knife | $4,056 |
| Skeleton Knife | $3,800 |
| Stiletto Knife | $2,817 |
| Flip Knife | $2,568 |
| Nomad Knife | $2,100 |
| Ursus Knife | $2,065 |
| Huntsman Knife | $1,903 |
| Survival Knife | $1,800 |
| Paracord Knife | $1,600 |
| Bowie Knife | $1,304 |
| Falchion Knife | $1,254 |
| Shadow Daggers | $940 |
| Navaja Knife | $648 |
| Gut Knife | $616 |
🖤 Black Pearl
Identification
- Color: Dark purple/green iridescent sheen
- Appearance: Changes color based on lighting angle
- Rarest Doppler variant (lowest drop rate)
Black Pearl has specific Pattern Index seeds. The color shifts between purple and green, much darker than any standard phase. Always use pattern verification tools before purchasing.
🟢 Gamma Doppler
Gamma Doppler is a separate finish with its own phase system and rare variants.
| Phase | Colors | Notes |
|---|---|---|
| Gamma P1 | Green + Cyan | Diamond-like patterns possible |
| Gamma P2 | Bright Green | Most valuable standard gamma |
| Gamma P3 | Cyan + Blue | Blue-dominant patterns |
| Gamma P4 | Lime + Green | Lime green coloring |
| Emerald | Full Green | Rarest gamma (like Sapphire) |
📈 Float Value Impact
| Condition | Float Range | Value Impact |
|---|---|---|
| Factory New | 0.00 - 0.08 | Full value |
| Minimal Wear | 0.08 - 0.15 | -10-20% |
| Dopplers don't drop in FT, WW, or BS conditions | ||
Low float premium: FN Dopplers with <0.01 float command 10-30% premium. Ultra-low floats (<0.001) can be worth significantly more.
⚠️ Common Scams & Mistakes
Scammers rename Max Blue P4 as "Fake Sapphire." These are worth more than average P4 but nowhere near real Sapphire. Always verify Phase with pattern checker. Use the SteamAnalyst Doppler Phase Checker for confirmation.
Screenshots can be manipulated with lighting. Always verify Pattern Index independently. Check multiple sources before high-value trades.
Seller shows FN screenshot but trades MW. Always inspect the exact item before accepting trade.
📊 Value Hierarchy Summary
From most to least valuable:
- Sapphire — Most valuable
- Ruby — Very high value
- Black Pearl — High value, very rare
- Emerald (Gamma) — High value
- Phase 2 — Best standard phase
- Phase 4 — Second best standard
- Phase 1 — Base value
- Phase 3 — Lowest standard value
❓ Doppler Phase FAQ
What are Doppler phases in CS2?
Doppler phases in CS2 are color variations determined by an item's Pattern Index. They include Phase 1, Phase 2, Phase 3, Phase 4, and rare variants such as Ruby, Sapphire, and Black Pearl.
What is the most valuable Doppler phase?
Sapphire Doppler is typically the most valuable, followed by Ruby and Black Pearl. Among standard phases, Phase 2 is usually the most valuable.
How can I check a Doppler phase?
You can check a Doppler phase by verifying the Pattern Index using a trusted Doppler phase checker such as the tools available on SteamAnalyst.
Are Fake Sapphires real?
No. Fake Sapphires are Phase 4 Dopplers with high blue coverage. They are not true Sapphire variants and are worth significantly less.
Does float affect Doppler value?
Yes. Lower float Dopplers, especially Factory New knives below 0.01 float, often command a premium compared to higher float versions.
