The Smurfstone is a magical crystal that appears in the episode "The Smurfstone Quest". It is an egg-shaped crystal that emits heat which Papa Smurf's books say contains magical healing powers. It is located in a cave behind a waterfall in the distant valley of Notrod, and is guarded by the Molians, who fear going into the cave that the Smurfstone is in, saying that it is a dragon's nest.