Board Thread:General Discussion/@comment-26576633-20150705211123/@comment-26576633-20150706110119

KinguvX wrote: I personally believe that Sardonyx is a Homeworld Gem that came to search for Jasper and Lapis Lazuli but the Crystal Gems interfered and Steven befriends her and then she joins the team. A new teammate would be an awesome addition to the show and how Garnet, Amethyst, and Pearl react to her. Yeah, it's quite possible that she's a Homeworld gem. And she may join the CG if:

a) she was recently created, so she didn't know about the war and all the Homeworld's evil actions until she meets the CG and they explain to her. She finds it wrong and turns against Yellow Diamond.

b) she always wanted to be a Crystal Gem, but she was afraid of Yellow Diamond and pretended to agree with her. When she comes to Earth, she's not afraid anymore because she has allies.