Phase 1-4 pricing, Ruby, Sapphire & Black Pearl values, how the cutout blade design affects Doppler aesthetics, and phase identification.
| Float Range | Condition | Avg Price | vs Average | Verdict |
|---|---|---|---|---|
| Sapphire | Factory New ★ | $4,000–8,000 | All-blue — rarest Doppler variant | Ultra Rare |
| Ruby | Factory New | $2,500–5,000 | All-red — highly sought after | Ultra Rare |
| Black Pearl | Factory New | $2,000–4,500 | Dark iridescent — collector favorite | Ultra Rare |
| Phase 2 | Factory New | $750–1,000 | Pink/magenta — best standard phase | Recommended |
| Phase 4 | Factory New | $700–950 | Bright blue — popular choice | Good Value |
| Phase 1 | Factory New | $600–850 | Dark tones with purple hints | Standard |
| Phase 3 | Factory New | $550–800 | Green/black — least demanded | Budget |
★ Prices shown are for Factory New condition. Doppler phase determines the base price, while float value adds a premium for ultra-low copies. Use our inspect tool to identify phase and check float value.
The ★ Skeleton Knife | Doppler was introduced with Operation Shattered Web in November 2019. The Skeleton Knife stands out from other knife types with its distinctive cutout blade design— holes cut through the blade that create a unique silhouette. When paired with the Doppler finish, the iridescent colors shift and shimmer through the blade openings, creating a visual effect unique to this knife type. It's one of the newer knife designs in CS2 and has quickly become a fan favorite.
Like all Doppler finishes, the Skeleton Knife Doppler comes in 7 variants. Standard phases (P1–P4) each have characteristic colors: Phase 1 is dark with purple accents, Phase 2 features desirable pink/magenta tones, Phase 3 leans green/black, and Phase 4 shows bright blue/teal. The three ultra-rare variants — Ruby (solid red), Sapphire (solid blue), and Black Pearl(dark rainbow iridescence) — are each estimated at roughly 1–2% of all Doppler drops. The Skeleton Knife's cutout design makes these rare colors especially stunning. Use our inspect tool to identify the exact phase.
Skeleton Knife Doppler has a float range of 0.00–0.08for Factory New and 0.08–0.12 for Minimal Wear. The Skeleton Knife's slim blade profile and cutout edges make wear more visible at higher floats — scratches along the blade edges and around the cutout holes become noticeable as float increases. For this reason, ultra-low float copies (0.00x) are highly valued, as they maintain a perfectly clean edge around all the blade's unique structural features. The difference is subtle but noticeable to experienced traders.
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