Every economy has its crown jewel. In Counter-Strike 2, that title belongs to a single knife: the Karambit Case Hardened Blue Gem Pattern #387 in Factory New condition, widely regarded as the most expensive skin in CS2 history. It's not a meme, not a rumor — it's a real digital item valued at over $1.5 million, and depending on who you ask, the real number could be closer to $2 million.
This guide breaks down what makes this knife so expensive, who owns it, and how the Case Hardened market works for collectors who want a piece of the blue gem dream without spending a fortune.
The Karambit Case Hardened skin uses a randomized pattern system, with over 370 different patterns possible, and only around 12 to 13 of those patterns considered true "blue gems" — meaning the visible play side of the blade is almost entirely covered in blue rather than the usual gold, purple, and blue mix.
Pattern #387 is the rarest of the rare. It is the only Factory New copy known to exist, and it has never been publicly sold. Across the entire game, only nine known copies of pattern #387 exist, and just one of them is in Factory New condition.
It comes down to pure odds. The odds of unboxing this exact knife are estimated at roughly 1 in 131 million to 1 in 371 million — you first need to land a Karambit drop (already extremely rare), and then hit the exact #387 seed with a near-perfect float on top of that.
With over 370 different patterns available on this knife, only a small handful are considered blue enough to be true "blue gems," which is what keeps the supply of this skin essentially frozen.
The skin currently sits in the inventory of a private collector known by the handle "青い王" (Blue King), also referred to in some circles as "Newb Rage." It has remained there for as long as public records show.
The owner keeps an extremely low profile. Both the inventory and the profile are private, suggesting the owner has no interest in public attention.
The most well-documented offer came in 2021, when someone bid 1,200,000 euros in Bitcoin — roughly $1.5 million USD at the time. The owner rejected the offer, reportedly replying that the amount was too low.
If that same amount of Bitcoin were valued today, it would be worth significantly more in both euros and dollars than it was back in 2021. That's part of why current estimates for the knife sit well above the original offer.
Current valuations place the knife between $1.5 and $2 million, with some estimates going as high as $2.5 million if it were ever to go up for public sale. Because the only known transaction was a declined offer rather than a completed sale, the exact figure remains speculative — but the consensus across the trading community is that no other CS2 item comes close.
The closest publicly confirmed sale in CS2 history is the AK-47 Case Hardened Pattern #661 in StatTrak Factory New, which sold for over $1 million in June 2024 — the largest verified completed transaction in CS history. Unlike the Karambit #387, that AK-47 sale was a documented sale rather than a rejected offer.
Outside of the #387, other Blue Gem Karambits have changed hands for serious money too. A lower-tier "noob blue gem" with a more visible float sold for $169,000 in mid-2023, a record at the time for any Blue Gem sale outside of #387. Other Tier 1 patterns have reportedly sold in the $120,000–$160,000 range depending on float and demand.
Case Hardened patterns are randomly generated when a skin is unboxed, and blue is the rarest resulting color on the play side. Unlike most skins, where rarity is mostly about wear and StatTrak status, Case Hardened value is driven almost entirely by the pattern seed — a number locked in at the moment of unboxing that can never be changed or re-rolled.
There are over 1,000 patterns possible on this knife skin, and very few are considered visually "perfect" enough to command grail-level prices.
Realistically, owning the exact #387 pattern isn't happening for almost anyone — there's only one Factory New copy, and its owner has turned down seven figures. But the broader Case Hardened Karambit market is far more accessible than the headlines suggest.
The standard Karambit Case Hardened (non-blue-gem) typically sits in a range from a few hundred to a few thousand dollars across all five exterior conditions, which means you can own the same knife model and finish family the blue gem belongs to for a fraction of the price.
If you want a taste of the blue gem aesthetic without the millionaire price tag, look for lower-tier blue patterns or Tier 4 blue gems, which trade far below the headline-grabbing top tiers while still showing visible blue coverage.
If you're building toward a high-end knife collection — or just want a clean Case Hardened Karambit at a fair price — white.market is one of the best places to buy and sell CS2 skins. Here's why millions of players trust it:
Lowest prices on the market – As a peer-to-peer platform, white.market lets you buy directly from other players, which often means prices noticeably lower than the Steam Community Market.
Trusted by millions of users – white.market has built a strong reputation as one of the safest, most reliable CS2 skin marketplaces globally, including for high-value knife trades.
Instant delivery – No long waits. Skins are delivered to your Steam account quickly and reliably after purchase.
Transparent pricing – Compare real-time prices instantly, with no hidden fees or surprise markups.
Safe and secure transactions – Every trade is protected, which matters even more when you're dealing with high-value knives like Case Hardened Karambits.
Browse Case Hardened Karambits and other knife skins on white.market and find the right one for your budget.
The Karambit Case Hardened Blue Gem Pattern #387 in Factory New condition is the most expensive skin in CS2 history, with an estimated value between $1.5 million and $2 million or more.
No. The knife has never been publicly sold. The most documented event is a rejected $1.5 million offer (1.2 million euros in Bitcoin) made in 2021, which the owner turned down as too low.
The knife is held by a private collector known by the alias "青い王" (Blue King), also referred to as "Newb Rage." Both the owner's profile and inventory are kept private.
The most expensive publicly confirmed sale is the AK-47 Case Hardened Pattern #661, StatTrak Factory New, which sold for over $1 million in June 2024.
Their value comes from extreme rarity. Only a small number of Case Hardened patterns out of hundreds qualify as "blue gem," and pulling a specific top-tier pattern like #387 in Factory New has odds estimated around 1 in 131 million to 1 in 371 million.
Fewer than 50 Blue Gem Karambits exist across all patterns and conditions, with pattern #387 in Factory New being a true one-of-one item.
Yes. Standard Karambit Case Hardened skins without blue gem patterns typically range from a few hundred to a few thousand dollars, depending on wear, making the knife model itself accessible even though the rarest patterns are not.
High-end, rare-pattern skins have historically held value well over time and even recovered quickly after market downturns, but prices are speculative and not officially appraised — these are treated more like collectibles than guaranteed investments.
Reputable peer-to-peer marketplaces like white.market are a safer option than unverified private trades, especially for higher-value knives, thanks to secure transactions and a large, trusted user base.