Board Thread:General Discussion/@comment-25539649-20150620190612/@comment-24333699-20150709142255

Theories:

1. A Gem sent from Homeworld to search for Jasper, Lapis and probably Peridot. (If she hasn't arrived on Homeworld yet, that is, which isn't likely since this show is said to develop even in the hiatus, also explaining Steven's random weapon summoning mastery.) Likely from Yellow Diamond. If the multiple diamond theory is true, it could be that she came from White or Blue Diamond. Also a  Gem sent from Homeworld to take care of the Crystal Gems, as mentioned above.

2. As mentioned above, a Steven Fusion. Not so likely though.

3. A Rainbow Quartz case, as in being shown in previous events except ones important to the show's story line. The entire week can be flashbacks concerning her.

4. A Lapis Lazuli case, as in another forgotten gem which, Steven, or one of gems ultimately finds, and you know what happens next. The entire week will then be about her, until the end of the bomb.

5. This one, my own theory, is that somewhere, in someplace located on Earth, is a important group of people (like a group of scientists) who happened to find this "alien" who is Sardonyx. They imprisoned her, experimented on her, and did nasty things to her, until she escaped. All imformation about this was secret to any other human being. There was a secret hunt for her. She has been running ever since, shapeshifting into things to hide and blend in, until she found Beach City, where she finds Steven.

Before you people speculate that other people from around the world would question the gems' existence in Beach City, Ronaldo's Rising Tides, Crashing Skies has been taken down.

Proof: http://keepbeachcityweird.tumblr.com/post/121711009986/tubetube-took-down-my-video-because-copyright

With that given, there's no way those horrible group of people would go straight there. But the time will come when they do. In the next Bombs probably.

But since this is about Sardonyx, there! She bumps into Steven and fun arises.

Until Homeworld finds out. And when that horrible group of people find her.

6. A Gem from Homeworld who secretly sided with Rose Quartz during the war. Out of fear, pretended to side with the Homeworld during the war. She is tasked to go to Earth for a simple task (like Peridot) but finds the gems and stuff happens. Also sees Steven.

That's all I got so far. Glob, I feel like Ronaldo now.