Wow, this project has worn me out last night, I even worked on it until 1 am, which it was finished at that time.
So that's why I upload it now: the first part of Carbink's mutation: my theory!
The second part (with homemade pictures): spritegirl.deviantart.com/art/…
Changed a spelling mistake: "Quarts" is now "Quartz"
Everyone, including me, has been wondering how Carbink mutates into a Diancie instead of evolving...?
So I've been studying for a whole day long to get this theory right and now after many weeks of working on it...
I do hope you understand these facts and that it isn't too complicated
Of all the info on Wikipedia and Google were way more complicated than this, so this is the easy version.