The Magic Crystal is a magical amulet that is owned by Princess Butterfly. It is the source of her power, and only works for someone with a pure heart.
It's design is different each season.
Season one
Season two
season 3
False Crystal
During Season Four, Frank swaps Princess Butterfly's crystal with a dark one, causing her to become possessed and evil.
True Crystal
The True Crystal replaced the magic crystal after Frank destroyed it. The True Crystal is able to banish evil, but was so powerful Princess Butterfly fell into a coma after being cleansed of the evil power of the false crystal.
Trivia
- The Crystal from Season two was used as the HeyKids studios logo.