Invisible Gem Monster

The Invisible Gem Monster appeared in "Island Adventure". Currently, the monster has retreated to it's gem, as it's physical body was killed by Sadie.

History
The Crystal Gems were trying to search for the monster in the beginning of the episode, not knowing it was invisible. It appeared near the end of the episode when it attacked Lars, Sadie, and Steven as Steven summoned his bubble shield to protect them. Sadie then defeated the monster by stabbing a spear all the way through it's body.

Description
The Invisible Gem monster had a bulky body type that could only be seen by the rain falling on its body and when it began to get muddy. It had a diamond shaped gem in it's chest.