Celestine

Celestine is a Gem that currently lives inside of Black Tourmaline (Fusion). She is the eighth Gem to join the massive fusion. She originally was a Homeworld constable, acting as sort of a police officer on Homeworld and surrounding planets. She was originally sent to Earth to catch Druzy Quartz, and apprehend her. But seeing that she was fused with six other Gems, she thought she didn't have a chance. She thought that she couldn't go back to Homeworld, as she would be a disappointment to the Diamonds.