Butterfly Knife Case Hardened Blue Gem Guide: Best Patterns, Seeds & Prices.

The Butterfly Knife | Case Hardened is one of the most iconic knives in Counter-Strike history. Being on a beloved Knife, the Butterfly Knife (or Balisong), makes the Blue Gems just that much better! While every Case Hardened skin shares the same finish, no two are exactly alike. That’s because each knife is assigned one of 1,000 different pattern seeds, creating a unique distribution of blue, gold, purple, and even slight silver across the blade.

Most patterns are worth the standard market value. A handful, however, have become some of the rarest and most expensive skins in CS2; these are known as Blue Gems!

In this guide, we will take a look at and talk about everything you need to know about Butterfly Knife | Case Hardened Blue Gem patterns and prices!

What is a Butterfly Knife Blue Gem?

Unlike finishes such as Doppler or Fade, the appearance of a Case Hardened skin is entirely determined by its pattern seed. The seed decides which part of the Case Hardened texture is displayed on the knife, meaning every pattern has a different amount of blue visible on the blade.

A Blue Gem is simply a Case Hardened pattern with an exceptionally high amount of blue. This can be on the playside (which makes it way more expensive and sought-after) or on the backside (which still has a big price point and market). Since only a very small number of the 1,000 possible patterns qualify as a Blue Gem, collectors are willing to pay enormous prices for the best patterns out there.

The more clean blue coverage a knife has, the rarer and more expensive it becomes.

Looking for a trustworthy platform where you can sell CS2 (CS:GO) skins? Just choose the items in your inventory, the suitable payout method, click “Continue,” and instantly get money to your account’s balance.

About the Patterns and Tiers

The skins where patterns have the highest importance and change in price and rarity by far are the Case Hardened skins. Featuring such iconic weapon skins as the AK-47 | Case Hardened or Knives such as the high-tier Butterfly Knife | Case Hardened, which our guide revolves around.

Most Case Hardened skins are ranked into different tiers, from Tier 1 to Tier 4. Tier 1s are generally considered the best pattern by the community, although the classification remains subjective since Valve and Counter-Strike have never provided an official ranking system.

Tier 4 patterns are the lowest of the Top Tier patterns but are still considered better than random Case Hardened skins.

Many guides exist for “Blue Gems”, using methods such as visual judgment, mathematical calculations, or pixel counting. While rankings can vary, the community generally agrees on the most desirable patterns. For our CS2 Butterfly Knife | Case Hardened Blue Gem guide, we read through multiple guides and checked many patterns individually, which took quite some time. 

Looking for a complete breakdown of CS2 (CS:GO) Blue Gem Patterns? Check out our guide to know everything about this blue coloration and its variation on each possible weapon type.

When was the Butterfly Knife Case Hardened released?

The Butterfly Knife and its Case Hardened variant with the rare Blue Gem Pattern were released on July 1st 2014, with “Operation Breakout” and the “Operation Breakout Case”. Alongside other famous and iconic skins such as the P90 | Asiimov and M4A1-S | Cyrex, the Case Hardened Butterfly Knife quickly became one of Counter-Strike’s most iconic Knife Types and also most beloved finishes for collectors and traders who wanted rare patterns on their skins.

It quickly made its way to the top of most expensive Counter-Strike 2 skins, with the Karambit Blue Gems and other really rare and demanded skins.

Why Is the Butterfly Knife Blue Gem So Expensive? 

Case Hardened skins are some of the most pattern-dependent skins in Counter-Strike, with certain patterns dramatically increasing their rarity and value. This is especially true for high-tier knives such as the Butterfly Knife | Case Hardened, where patterns with a large amount of blue are known as “Blue Gems” and are highly sought after by collectors. Not only for their immense rarity but also for their looks, as these are some of the most stunning finishes in the game, and this is on the most popular Knife!
These patterns are commonly ranked from Tier 1 to Tier 4, with Tier 1 generally considered the most desirable, although Valve has never provided an official ranking system. While different guides use visual judgment, pixel counting, or mathematical calculations to rank Blue Gems, the community generally agrees on which patterns are the most valuable. 

Of course, there are other rare Case Hardened patterns that are no less unique, yet more affordable in comparison to Butterfly Knife Blue Gem patterns — Gold Gem patterns. If you are looking for an outstanding combination with gold colors, then these seeds are your perfect match!

How Butterfly Knife Case Hardened Blue Gem Tier Lists work

The Counter-Strike community has classified the “Case Hardened Butterfly Knife Blue Gem patterns” into four distinct Tiers. Tier 1 being the best and Tier 4 being the “worst of the best”. Tier 1s give the most overpay, but often enough, there is a clear winner as the “God Tier” or “Top Tier” pattern.

As taste is subjective, and we read through a lot of guides to get here, some of these skins might be bumped down or moved up a little. It is very hard, as there is no exact “GUIDE TO BLUEGEMS” from Valve, as all guides are user-made. This means the opinions can vary.
Here are the Tier-Patterns with the Top Tier or “God Patterns” for the Blue Gem Butterfly Knife.

Tier 1

Tier 1 patterns often feature an almost entirely ocean blue playside with very little gold or purple breaking up the finish. These are the collector pieces that regularly appear in high-end inventories, in private sales and sometimes get traded to pro players for events such as Counter-Strike 2 majors. They are exceptionally rare and often sell for roughly 60-80x the value of a regular Butterfly Knife | Case Hardened! This also depends on the Tier 1 pattern and the float itself. Some Tier 1 patterns may include purple, but they have such a big amount of ocean blue that people can not gloss over them.

149, 182, 330, 398, 494, 652, 694, 838, 913 

Tier 2

Tier 2 patterns still have a very dominant blue coverage but include larger patches of gold or purple. They remain highly desirable and are often the sweet spot for collectors looking for a premium Butterfly Knife Blue Gem without paying record-breaking prices. These Tier 2 skins are not as clean or do not have the same amount of Blue as the Tier 1 skins, but are still rare and expensive.

29, 73, 147, 194, 214, 283, 371, 638, 721, 749, 839, 868, 881, 891, 919 

Tier 3

Tier 3 knives feature noticeable blue across large sections of the blade but are no longer close to full coverage. These Butterfly Knife Blue Gem patterns remain collectable while being considerably more accessible, and still get a sweet spot in Tier 3.

61, 74, 92, 108, 112, 130, 248, 256, 282, 306, 335, 358, 407, 411, 424, 457, 458, 488, 499, 510, 522, 618, 629, 664, 702, 703, 713, 720, 776, 782, 798, 803, 809, 811, 853, 858, 902, 917, 924, 928, 964, 965 

Tier 4

Tier 4 patterns contain less visible blue and are much more mixed with gold and purple. Although they carry smaller premiums, they are often the entry point for players who simply enjoy the Blue look.
Tier 4 skins often have around half of the blade colored with the demanded blue pattern, but you can also have lots of blue and purple to be a Tier 4 Case Hardened Butterfly Knife.

10, 11, 18, 20, 27, 30, 34, 38, 42, 43, 56, 67, 72, 98, 111, 116, 139, 153, 188, 191, 208, 236, 255, 262, 269, 273, 311, 321, 322, 332, 341, 375, 377, 401, 414, 420, 426, 442, 445, 453, 464, 466, 505, 507, 513, 515, 528, 547, 575, 598, 612, 630, 631, 633, 642, 658, 671, 699, 717, 741, 768, 770, 788, 799, 801, 808, 823, 826, 841, 842, 844, 846, 854, 880, 884, 885, 893, 898, 901, 905, 906, 907, 916, 927, 974, 976, 989 

Note: We did not put the Pattern ID’s in order from best to worst, but made it chronologically, which makes it easier to see what Pattern ID you have and where it ranks in the Tier system.

Don’t know where to buy (CS2) CS:GO Skins? Visit Skin.Place to experience secure transactions, fast delivery, and great deals, along with an outstanding range of search filters.

Best Butterfly Knife Blue Gem Patterns

Unlike the AK-47 | Case Hardened, which has one universally recognized “best” pattern, Butterfly Blue Gem patterns have several highly desirable seeds, and the community is divided. Let’s explore them in more detail.

#182 Pattern (Best Overall)

• Tier: #1
• Community Rank: The best Butterfly Knife | Case Hardened pattern.
• Blue Coverage: 78.3% frontside.
• Pattern Description: Blue covers almost the whole blade with one gap of yellow near the handle and a tiny spot on the spine of the blade.
• Unique Visual Features: Near full blue blade.
• Backside Appearance: The backside of this Blue Gem Butterfly Knife seed also has good blue coverage, approximately 80.9%.
• Collector Appeal: Collectors like this Butterfly Knife Blue Gem pattern for maximum blue and almost perfect symmetry of pattern.
• Price Premium: It commands a very high premium over a regular Case Hardened Butterfly Knife, ranging from $80,000 to over $120,000.
• Availability: The pattern is extremely rare. Based on open databases, only 17 items exist.
• Best Wear: Factory New is especially desirable.
• Who It’s For: Best for elite collectors, investors, and high-end traders.

#652 Pattern

• Tier: Tier 1
• Blue Coverage: 68.2% frontside.
• Pattern Description: The blue appears on the center, spine, and heel of the blade, with a gold coloration on the tip.
• Unique Visual Features: This Butterfly Knife | Case Hardened Blue Gem seed stands out due to the large spot of blue, with only gold on the tip of the blade.
• Backside Appearance: The backside repeats the pattern, with 70.1% of blue coloration.
• Collector Appeal: Collectors like this Butterfly Knife | Case Hardened Blue Gem pattern due to its clean blue across most of the blade.
• Price Premium: It commands a very high premium over a regular Case Hardened, ranging from $50,000 to $90,000.
• Availability: This Blue Gem Butterfly Knife seed is extremely rare, with only 17 items existing.
• Best Wear: Factory New version is especially desirable.
• Who It’s For: This Blue Gem Butterfly Knife is best for elite collectors, investors, and high-end traders.

#398 Pattern

• Tier: Tier 1
• Blue Coverage: 60.8% frontside.
• Pattern Description: The blue covers almost a whole blade, with a tiny gold spot on the tip and a larger gold area on the heel of the blade.
• Unique Visual Features: A balanced blue with slight spots of gold.
• Backside Appearance: The backside of this Blue Gem Butterfly Knife features a similar amount of blue, with approximately 58.4%.
• Collector Appeal: Collectors like this Butterfly Blue Gem pattern due to the large spot of blue coloration with minimal gold intrusion.
• Price Premium: It commands a very high premium over a regular Case Hardened Butterfly Knife, ranging from $45,000 to $75,000.
• Availability: The pattern is extremely rare. Based on open databases, only 20 items exist.
• Best Wear: Factory New is desirable, yet it remains attractive even in lower wear levels like Well-Worn or Battle-Scarred.
• Who It’s For: This Blue Gem Butterfly Knife CS2 is best for elite collectors, investors, and high-end traders.

#838 Pattern

• Tier: Tier 1
• Blue Coverage: 68.6% frontside.
• Pattern Description: The blue appears on almost the whole blade, with small spots of gold on the tip and heel.
• Unique Visual Features: This Butterfly Knife Blue Gem pattern features a deep blue saturation.
• Backside Appearance: The backside also has good blue coverage, yet a bit lower in contrast to frontside, covering 63.1%.
• Collector Appeal: Collectors like this Butterfly Knife | Case Hardened Blue Gem seed for a deep blue saturation.
• Price Premium: This Blue Gem Butterfly Knife pattern commands a very high premium over a regular Case Hardened, ranging from $40,000 to $70,000.
• Availability: It is extremely rare. Only 19 items exist at the moment.
• Best Wear: Factory New version is desirable. At the same time, patina in lower wear makes it no less attractive.
• Who It’s For: This Butterfly Knife | Case Hardened Blue Gem pattern is best for elite collectors, investors, and high-end traders.

#494 Pattern

• Tier: Tier 1
• Community Rank: #2 Blue Gem.
• Blue Coverage: 70.6% frontside.
• Pattern Description: The blue covers the tip, center, and spine of the blade. The heel contains gold spots.
• Unique Visual Features: While this Blue Gem pattern for Butterfly Knife features less percentage of blue coloration than #1, almost full blue blade makes this pattern one of the most recognizable premium Blue Gems.
• Backside Appearance: The backside also has good blue coverage, with approximate 64.3% of it.
• Collector Appeal: Collectors like this CS2 Butterfly Knife | Case Hardened Blue Gem due to its clean finish with only gold spots at the heel of the blade.
• Price Premium: It’s one of the premium Butterfly Knife Blue Gem patterns, yet is more affordable than #1, ranging from $30,000 to $55,000.
• Availability: This Butterfly Knife | Case Hardened Blue Gem seed is extremely rare, with only 23 items existing.
• Best Wear: While Factory New is especially outstanding, this pattern features an eye-catching look in any wear level and float value.
• Who It’s For: This CS2 Butterfly Knife | Case Hardened Blue Gem pattern is best for elite collectors, investors, and high-end traders.

#330 Pattern

• Tier: Tier 1
• Blue Coverage: 62.3% frontside.
• Pattern Description: The blue covers almost the whole blade, with gold spots at the tip and heel of the blade.
• Unique Visual Features: This Butterfly Knife | Case Hardened seed stands out due to its clean frontside with dominant blue coloration. 
• Backside Appearance: The backside shares more blue coloration, with approximate 69% of it.
• Collector Appeal: Collectors like this Butterfly Knife Blue Gem pattern because of clean blue coloration that covers almost the entire surface of the blade.
• Price Premium: It commands a high premium over a regular Case Hardened, ranging from $25,000 to $50,000.
• Availability: This Blue Gem Butterfly Knife pattern is extremely rare. Only 16 items exist.
• Best Wear: Factory New version stays as the most desirable, but it features a high value in any float level.
• Who It’s For: It’s best for elite collectors and investors, yet a bit more affordable for traders or players, compared to other pattern seeds.

Butterfly Knife Blue Gem Price Guide

The Butterfly Knife Blue Gem price is another detail we cannot ignore in our guide. Undoubtedly, Butterfly Case Hardened shares a high value that can compete only with other premium items like AK-47 and Karambit. But what is the exact cost of each tier and wear level? Let’s check them a table below:

#1 (#182, #494)	Tier 1	Tier 2	Tier 3	Tier 4
Factory New	$50,000 – $120,000	$25,000 – $90,000	$7,500 – $25,000	$2,500 – $10,000	$500 – $3,500
Minimal Wear	$50,000 – $ 75,000	$4,000 – $11,000	$2,000 – $13,000	$1,100 – $6,000	$1,000 – $2,600
Field-Tested	$8,000 – $20,000	$2,000 – $15,000	$1,400 – $9,000	$900 – $3,000	$700 – $1,600
Well-Worn	$12,000 – $20,000	$2,000 – $4,000	#1,300 – $3,000	$800 – $4,000	$700 – $1,600
Battle-Scarred	$13,000 – $15,000	$1,500 – $2,000	$1,100 – $5,000	$800 – $1,300	$500 – $1,300

As you can see, the main factor that directly increases the Blue Gem Butterfly Knife price is the tier of the exact pattern seed. This is driven by the highest amount of blue coloration (65%–80%) and market demand.

The second important factor is the wear level and float value. A Butterfly Knife | Case Hardened Battle-Scarred will never be more expensive than Minimal Wear or Factory New variants. At the same time, a Tier 1 Blue Gem Butterfly Knife | Case Hardened Battle-Scarred can still be several times more expensive than lower-tier Blue Gems (Tier 2–4).

Another detail that can slightly affect the price is the StatTrak system. While StatTrak can add a small premium, the primary value of any Blue Gem Butterfly Knife still lies in its blue coloration and pattern tier.

If you aren’t impressed by the Butterfly Knife | Case Hardened price, then be sure to check the most expensive CS2 skin guide on our platform, which also covers other desirable finishes in the game.

How to Check Your Butterfly Knife Pattern Seed

Another important detail is understanding how to inspect a Blue Gem Butterfly Knife seed. One of the simplest ideas is to tap on the “Inspect in Game…” button in Steam Inventory. It allows you to look at the exact skin in the game lobby. While you can literally take a closer look at Butterfly Knife | Case Hardened (and check both the playside and backside), there is no additional information other than float value and pattern template.

That’s why you should also use pattern check websites and open databases. With such tools, you can compare the price of each Butterfly Knife | Case Hardened Blue Gem pattern based on float value and wear level. In the end, you could understand what tier the exact Case Hardened Butterfly Knife belongs to and what its actual price is at the moment.

Butterfly Knife Blue Gem vs Regular Case Hardened

Now, let’s check the exact key differences between Blue Gem and regular Case Hardened Butterfly Knife to avoid any misunderstandings:

Feature	Blue Gem	Regular Case Hardened
Blue Coverage	From minimal to near full blue (depends on tier)	From almost zero to minimal percentage
Price	From $1,200 to over $100,000	$2,500 or less
Rarity	Extremal scarcity (the odds of obtaining are 0.05%)	Standard scarcity (the odds of obtaining are 0.26%)
Collector Value	Extremely high	Standard base market price
Investment Potential	High	Low

Of course, we should mention that this comparison also applies to other Case Hardened weapon and knife skins. There could be slight differences, yet the main idea remains the same.

Is the Butterfly Knife Blue Gem a Good Investment?

No less important question is whether the Butterfly Knife Blue Gem is a good investment or not. In truth, this skin shares everything you need. It includes collector demand, historical appreciation, and high liquidity. At the same time, the risks still exist. It applies especially to lower-tier seeds, whose total number is higher than Tier 1 or Tier 2 patterns.

For example, one of these risks includes game mechanic changes. The October 2025 update (Knife/Glove trade-up contract) instantly changed the market, cutting the minimum price for a regular FN Case Hardened Butterfly Knife almost in half. But could it affect the price of Butterfly Knife Blue Gem patterns as well?

If we are talking about high-tier seeds, such as #182 and #494, then it’s almost impossible, yet no one can guarantee it. The reason lies in the extremely high rarity of these Butterfly Knife | Case Hardened Blue Gem patterns (only 40 items exist based on open databases). A similar situation follows Tier 1 patterns, such as #194, #283, #330, #694, #703, and others (162 items exist based on open databases). In other words, even a chance to craft Butterfly Knife Blue Gem patterns through using Covert weapon skins doesn’t affect their value.

Overall, premium Case Hardened tiers could be a nice long-term investment for both collectors and high-end traders. While their value could also be slightly affected by CS2 updates, in general they have a high chance to increase over time.

Best Loadouts With Butterfly Knife | Case Hardened Blue Gem

Finally, getting a Case Hardened Butterfly Knife with Blue Gem pattern could be a sign to create a perfect visual loadout. For example, you can add Hydra Gloves | Case Hardened. In truth, players usually see them as the only option to complete a knife glove combo. The final result depends on your goals, preferences, and budget.

Still, let’s check the other available options:

• Sport Gloves | Amphibious: If you want closed-finger gloves, Amphibious could be the best option due to their water-style design. Also, if your budget is limited and you don’t mind small scraps or fading, you can get the MW or FT version, which are more affordable than the FN variant.
• Moto Gloves | Polygon: These gloves offer a richer blue at a lower price, which makes them an even better option for creating an eye-catching loadout.
• Specialist Gloves | Mogul: Mogul perfectly suits any wear level of Butterfly Case Hardened and emphasizes each part of the blade’s coloration.
• Hand Wraps | Cobalt Skulls: This variant combines the idea of Hydra Gloves and Moto Gloves, creating an option with both cut-off fingers and rich blue, along with an affordable price.

Want to see the most expensive CS2 inventory in the history of Counter-Strike? Then be sure to check out our guide! Sapphire, Dragon Lore, and Titan Holo are just a few of the items in this collection.

Where to Buy or Sell a Butterfly Knife | Case Hardened Blue Gem

The last detail we should explore is where you can buy or sell a Blue Gem Butterfly Knife. As we previously mentioned, the price of patterns with a high amount of blue coloration is higher than standard Case Hardened variants. In other words, it could be hard to find an offer to buy or sell one on Steam Community Market.

The reason lies in high fees and the limit of the maximum price, which is approximately $1,700-$1,800. As a result, you may find on Steam Butterfly Knife | Case Hardened Blue Gem #73 in Battle-Scarred wear condition with a price of $1,500. In contrast, a regular FN Butterfly Case Hardened features the same price on trusted third-party platforms like Skin.Place.

Another way is private trading, which means directly exchanging items peer-to-peer using a Steam Trade URL. Regardless of the chosen way, remember to verify the exact pattern seed using Blue Gem databases (such as ours) and tools like “Inspect in Game…” No less important is to compare recent sales. It could help you understand the actual price for one or another Butterfly Knife Blue Gem pattern. In the end, always double-check the exact wear level and pattern when confirming the trade via the Steam Guard mobile authenticator. While there is a 7-day trade protection, it’s better to avoid any mistakes than get a 30-day trade ban on your account.

What Affects Butterfly Knife Blue Gem Value?

A lot of things can affect your Butterfly Knife Blue Gem; one of the most important is where your blue skin is. Is it on the Playside or the Backside? Is it Factory New or Battle-Scarred? In this quick paragraph, we will go over some frequently asked questions about the conditions and prices of Blue Gem knives.

Does wear matter?

Yes, but not in the way many players would usually expect.

A Factory New and a Battle-Scarred knife with the same pattern seed will always have the same Blue Gem pattern. The wear only changes the condition of the finish, not the pattern itself. It can make the ocean blue look less like fresh water and more like a murky pond. 

For collectors, pattern seed almost always comes first, while wear determines the final overpay and price within that pattern. But Battle-Scarred Blue Gem Knives, especially Tier 1s, are still highly collectable and pricey.

Playside vs backside

When collectors and cash-traders evaluate a Butterfly Knife Case Hardened, the playside is usually the deciding factor, as this is the one you want.

A knife might have a nearly perfect blue backside, but if the playside is mostly gold, it generally won’t receive the Blue Gem pricing like its playside counterpart. This is different from knives such as the Talon or Karambit, as they work differently when you inspect them.

That said, knives with exceptional blue on both sides are especially sought after and often demand extra collector interest.

Conclusion

The Butterfly Knife | Case Hardened remains one of the most iconic collector skins in CS2. While thousands of standard patterns exist, only a select few achieve true Blue Gem status. This also drives up their price point, their demand and their status immensely. The Butterfly is one of the most popular and wanted skins in the entire history of Counter-Strike 2, rivalled only by the Karambit.

Whether you’re looking for one of the legendary Patterns or hunting for a hidden Tier 3 bargain, understanding patterns and seeds is essential before buying or selling a Case Hardened skin.
For collectors, it is not just the skin but the pattern which makes all the difference in the world.
But buy with due diligence and always compare the prices on different sites, and be sure what you buy and how much you actually want to spend.

Explore other Blue Gem guides and Case Hardened pattern resources to build a valuable CS2 inventory together with Skin.Place!