Instantly CheckDoppler Phases
Free Chrome extension that shows Doppler phases (Ruby, Sapphire, Black Pearl, P1-P4) directly on Steam Market. Never miss a Ruby listed as Phase 2 again.
Used by 100,000+ CS2 traders
All Doppler Phases Explained
Understand the visual differences and price ranges for each phase
Ruby
$2,000+
Pure red gem. Most expensive Doppler variant after Black Pearl.
Sapphire
$1,800+
Pure blue gem. Second most valuable Doppler after Ruby.
Black Pearl
$3,500+
Rarest Doppler. Purple/green/black mix. Most expensive.
Emerald
$1,500+
Pure green gem. Gamma Doppler exclusive. Very rare.
Phase 1
$500-$800
Mostly black with pink accent. Cheapest Doppler phase.
Phase 2
$600-$900
Pink dominant. Most desirable regular phase.
Phase 3
$500-$800
Mostly black with blue/green. Similar to Phase 1.
Phase 4
$550-$850
Blue dominant. Second most desirable after Phase 2.
How the Doppler Phase Checker Works
Our Chrome extension analyzes every Doppler knife on Steam Market in real-time
Instant Phase Detection
Automatically identifies Ruby, Sapphire, Black Pearl, Emerald, and Phases 1-4 directly on Steam Market
No Inspect Link Needed
See the phase instantly without clicking inspect or opening any links
All Doppler Knives
Works with Karambit, M9, Butterfly, Talon, Ursus, Flip, Bayonet, and more
Price Difference Alerts
See when a Ruby is listed as Phase 2, or Sapphire listed as Phase 4 (profit)
Scam Protection
Never overpay for a Phase 1 thinking it's a Ruby again
100% Free
Free Chrome extension. No registration, no hidden fees
Why Checking Doppler Phase Matters
Massive Price Differences
A Karambit Doppler Ruby sells for $2,000+, while Phase 1 sells for $500. Same knife name, 4x price difference. Our extension shows the phase instantly so you never overpay.
Common Scam: Wrong Phase Listed
Scammers list Phase 1 knives with screenshots of Ruby to trick buyers. Our checker analyzes the actual item data, not just screenshots, protecting you from this scam.
Find Mispriced Rubies & Sapphires
Sometimes sellers don't know what phase they have and list a Ruby at Phase 2 price. Our extension highlights these immediately so you can snipe them before others.
Never Miss a Doppler Deal Again
Join 100,000+ CS2 traders using SteamLedger's Doppler Phase Checker to find mispriced Rubies and Sapphires.
Install Free ExtensionFree forever · No registration required · Works immediately
What is a Doppler Phase Checker?
A Doppler Phase Checker is a tool that identifies which Doppler phase a CS2 knife skin has. Doppler knives come in 7 variants: Ruby (red), Sapphire (blue), Black Pearl (purple/black), Emerald (green, Gamma only), and Phases 1-4 (mixed colors). The phase dramatically affects the knife's value, with Ruby, Sapphire, and Black Pearl worth 3-7x more than Phase 1 or Phase 3.
How to Check Doppler Phase in CS2
Install the SteamLedger Chrome extension and visit Steam Market. When you search for Doppler knives, the phase will be displayed instantly on every listing. No need to click inspect links or use external websites. The extension analyzes the item's paint seed and identifies Ruby, Sapphire, Black Pearl, or Phases 1-4 automatically.
Doppler Phase Price Guide 2026
- Black Pearl: $3,500+ (rarest, purple/green/black mix)
- Ruby: $2,000+ (pure red, second most expensive)
- Sapphire: $1,800+ (pure blue)
- Emerald: $1,500+ (pure green, Gamma Doppler only)
- Phase 2: $600-$900 (pink dominant, most desirable regular phase)
- Phase 4: $550-$850 (blue dominant)
- Phase 1: $500-$800 (mostly black with pink)
- Phase 3: $500-$800 (mostly black with blue/green, cheapest)
Which Knives Have Doppler Phases?
Doppler finishes are available on most CS2 knife types: Karambit, M9 Bayonet, Butterfly, Talon, Ursus, Flip Knife, Bayonet, Gut Knife, Stiletto, Navaja, Classic Knife, Paracord Knife, Survival Knife, Nomad Knife, and Skeleton Knife. Each knife type has all 7 Doppler variants (Ruby, Sapphire, Black Pearl, P1-P4), except Gamma Doppler which replaces Black Pearl with Emerald.
How to Spot a Fake Ruby or Sapphire
Scammers often edit screenshots or use misleading titles to make a Phase 1 or Phase 3 look like a Ruby or Sapphire. The only way to be sure is to check the actual item's phase using a Doppler Phase Checker tool. Screenshots can be faked, but the item's paint seed data cannot. Our extension analyzes the real item data from Steam's API, not screenshots, protecting you from this common scam.