The Case Hardened Pattern was introduced to CS:GO with the Arms Deal Update and so it is one of the oldest skins in the game. The Skin is available for the AK-47, the FiveSeven and every Knife in CS:GO. The pattern is variable like no other skin and that's the reason why it has probably the biggest range of trading value.
Here you can see some nice patterns with a big percentage of blue:
Example of a Blue Gem AK-47
This AK-47 has a full-blue magazine
Example of a Blue Gem FiveSeven
The second rarest pattern is a comletely gold pattern. It is very improbable to get an AK or a knife that is completely gold. The problem with these items is that many people don’t like this pattern because it doesn’t look as good as a Blue Gem. Maybe some others are collecting these items and are willing to pay much for it. So it is also very difficult to value this pattern.
Here are examples of gold pattern skins:
This is a nice example of the Gold Pattern on the AK
The Gold Pattern on the FiveSeven
The other patterns that might look nice are the Blaze pattern. Sometimes they are called also Rainbow or Galaxy pattern. This is a pattern with a big percentage of purple, marbled with big parts of blue and a gold background. That pattern is very variable and so the amount of purple and blue can be different. So there is also a big price range for this pattern, depending on the collector and his preferences.
These are some nice Rainbow patterns:
Typical Blaze or Rainbow pattern
Blaze pattern on the FiveSeven
All other possible patterns of Case Hardened items are worth more or less market price. It’s depending on the individual preferences and so very standard patterns that are completely silver can be worth a little bit less than market price and some common pattern with a bigger percentage of blue, purple or gold can be worth more than market price.
Here you can see a quite common pattern for the AK-47 Case Hardened that are worth about market price
Below you can see the most admired Case Hardened Knives:
The M9-Bayonet “OCEANO”
The Karambit Blue Gem (“Hiko Pattern”)
You are reading a guide about Case Hardened and its different patterns, for example the Blue Gem pattern.