Question 1

What exactly is a Karambit Ruby?

Accepted Answer

A Karambit Ruby is a Doppler knife with the Ruby phase, which gives the entire blade a deep, translucent red color with no secondary colors. It is one of the rarest Doppler phases, appearing in roughly 10% of all Doppler unboxes, and only exists from pre-2020 cases.

Question 2

How much does a Karambit Ruby cost in 2026?

Accepted Answer

Factory New Karambit Rubies start around $2,800 for higher float (0.06x) and climb to $12,000+ for ultra-low floats (0.000x). Minimal Wear can be found for $2,500–$4,000 depending on float. Prices on CSBoard are anchored to Buff163 and update in real time.

Question 3

Does float matter on a Ruby?

Accepted Answer

Yes, float is critical. Wear is most visible on the blade’s curved edge and near the handle. Any float above 0.03 will show visible scratches on the red surface, which reduces value significantly. Collectors pay a premium for sub-0.01 floats.

Question 4

Can I sell my Karambit Ruby instantly on CSBoard?

Accepted Answer

Yes. CSBoard is a P2P marketplace with zero trading fees. You list your knife, and when a buyer accepts, you trade directly via Steam. The buyer pays in USDT, and you receive the payout instantly to your wallet. No KYC, no middlemen.

Question 5

Where can I see all Karambit Ruby listings right now?

Accepted Answer

Go to /en/items/karambit-doppler?phase=Ruby and use the filters to set float and exterior. You’ll see every live P2P listing with prices, floats, and pattern indexes. All trades happen directly between players.

Question 6

How does CSBoard compare to other marketplaces for Ruby trading?

Accepted Answer

CSBoard charges zero fees, offers instant USDT payouts, and supports multiple networks (TRC20, BEP20, Solana, TON). Unlike bot-based platforms, trades are P2P, so you never lose control of your skin to a bot. Prices are pegged to Buff163, ensuring fair market value.

Phase	Relative Rarity	FN Price Floor	Demand Trend (2026)
Ruby	1 in 10 Doppler	$2,800	↑ 22% YoY — highest demand among gem knives
Sapphire	1 in 10 Doppler	$3,200	↑ 18% YoY — blue gem prestige
Black Pearl	1 in 20 Doppler	$2,400	↑ 12% YoY — niche collector base

Karambit Ruby: The Complete 2026 Guide to CS2’s Red Gem Knife

Top 5 Most Valuable Karambit Ruby Floats (Recent Sales)

0.0004 Float (Factory New)

0.0009 Float (Factory New)

0.0031 Float (Factory New)

0.010 Float (Minimal Wear)

0.024 Float (Minimal Wear)

Karambit Ruby vs. Sapphire vs. Black Pearl

Live Karambit Ruby Listings on CSBoard

Karambit Doppler Ruby (FN 0.006)

Karambit Doppler Ruby (FN 0.014)

Karambit Doppler Ruby (MW 0.08)

Karambit Doppler Ruby (FN 0.001)

Frequently Asked Questions

Browse Karambit Ruby Listings Now

Live prices