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Gem
Gems are a type of item that either grants a skill (skill gem) or modifies a skill (support gem) when placed into a gem socket.
There are currently 166 different skill gems and 198 support gems in the game, for a total of 376.
Skill gems
Skill gems can be socketed to the skill to gain an active skill which can be assigned on the player's keybinds. Up to 9 skill gems can be bound simultaneously by default; items or passive skills may also grant additional skills.
Characters need to meet the skill gem's level and attribute requirements to be able to use it. Level and attribute requirements increase as a skill gem is leveled up.
When creating a skill gem using an uncut gem, it will be engraved at a gem level matching that of the uncut gem. Skill gems can be levelled up further using an 
Uncut Skill Gem up to its maximum level, typically Level 20.
Meta gems
Meta gems are skill gems which often have a support component and require other skill gems to be linked to it to function. These will often trigger other gems.
You can use multiple of them if you have enough spirit to satisfy their reservation costs.
Support gems
Support gems can be socketed into individual skills; these modify the effects of the supported skill.
The number of total support gems you can equip for each attribute alignment is determined by your character's attributes. You can equip 1 support gem for every 5 of the aligned attribute. For example, you if you have 100 dexterity, you can equip up to 20 green support gems. Additionally, each support gem can only be equipped once across all of the character's skills - duplicates of the same support gem cannot be equipped. Each skill provides recommendations on synergistic support gems.
Gemcutting
Version history
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