The Sinister Jester Gem...

So I've just seen the newest episode of Steven Universe (Yes yes I know I'm late...) and with more of the show's hype returning to me (since I stopped watching for awhile but returned when White Diamond was revealed) I decided to make my own edition of the movie's poster but with a touch of my theory. My theory was that The Unknown Gem is basically a clone of Pink Diamond made by someone on Homeworld, but it went terribly wrong.