Welcome to Smogon! Take a moment to read the Introduction to Smogon for a run-down on everything Smogon, and make sure you take some time to read the global rules.
Final Submission
Pretty simple main idea at play of 'Ore/Rough Diamond --> Cut Diamond,' but really I just wanted to be able to support the idea that the center diamond on the main design is its eye.
None
I've been firmly of this opinion since the design was chosen, I don't think it lends itself to an interesting, or even all that thematically appropriate pre-evo.