Mastery Gem

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Mastery Gem
Cosmetic icon Mastery Gem.png
Gem / Rune
Rarity: Rare

This gem will modify an ability effect on the hero that wears the item it is socketed in.
Created By
Valve logo.png

Mastery Gems were gems that originally customized the graphical effect of one or more hero abilities, while Kinetic Gems customized model animations. They were hero-specific.

After the 2014-08-14, Mastery Gems and their functions were merged with Kinetic Gems.


Previews can be found on each gem's individual pages.

Keeper of the Light Keeper of the Light[edit]

Gem Customizes Default on
Illuminate icon.png Illuminate

Kunkka Kunkka[edit]

Gem Customizes Default on
X Marks the Spot icon.png X Marks the Spot
Torrent icon.png Torrent
Tidebringer icon.png Tidebringer

Puck Puck[edit]

Gem Customizes Default on
Illusory Orb icon.png Illusory Orb
Waning Rift icon.png Waning Rift
Dream Coil icon.png Dream Coil

Templar Assassin Templar Assassin[edit]

Gem Customizes Default on
Psionic Trap icon.png Psionic Trap

Timbersaw Timbersaw[edit]

Gem Customizes Default on
Chakram icon.png Chakram


  • Merged with Kinetic Gems.
  • All existing Mastery Gems have been converted to Kinetic Gems.