Gems are collectibles found in Jetpack Joyride when players activate the Gemology gadget. While equipped, Gemology turns some coin into red gems that are worth 5x the value of a normal coin.

Gems are also spawned by purple Missiles spawned during Rocket Time, in trails.


  • Gems are red, and have a square-emerald cut, which is similar in appearance to a ruby.
  • According to the Gemology gadget's description, only coins minted in 1985 can be turned into gems.
  • Gemology can be paired with the Diamonds in the Bling It On! event for maximum effectiveness.
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