Uranium

Uranium was a home world gem that got uncorrupted after meeting Steven and the CG.

Backstory
She worked under Blue Diamond and Yellow Diamond before the war started. When the war started, she and a bunch of other gems were sent to earth. Her BGFF was shattered by a Garnet gem. She tried to attack her but was proofed and corrupted when the war was over. When she got out of her gem, she turned into a monster similar to Centibeetle only with Yellow-Green-Black hair instead of white. She tried to protect Centibeetle and her crew together. They were close friends. After Steven healed her and Centibeetle, She trusted Steven.

Friends
Centibeetle (Matt-Sit-Sit): She knew her back in the war days. She knew how to talk to her with some gargle noises and stuff. After they got uncorrupted, she grew up with her like close friends.

Jasper: She used to hate her for leaving her behind.

Trivia

 * Her corrupted form is somewhat similar to Centibeetle.