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Gem Cells are pink crystals that can be used as power sources. They can be used to power the Sky Pirates' Airship, as well as Mao Mao's Aerocycle.
The gem cell that originally powered the Sky Pirates' ship; destroyed in "I Love You Mao Mao
- The only devices confirmed to run on gem cells are flying vehicles, which may suggest that they have some sort of magical attributes that grant flight.