Welcome to the newly revamped GemSIm AU! Except this one is not for the public, its for Rena-Shi!
This AU is centered around a group of gems, currently fighting for their rights to live on Earth. There are Homeworlders who occasionally come and the Diamonds are no laughing matter. There are occasionally gems that defect off Homeworld and some that follow the diamonds as if their life depended on it! (Which their lives do.)