Talk:Earth ponies/@comment-5189731-20121114220753/@comment-4126310-20121115160818

The ponies which had woken up had some crystal aspects, but the whole "crystaliness" didn't return until the end of the episode, when Twilight and the others also sped through the transformation. As long as there's no official word on this (and there well might be, I haven't followed this in great detail), I would stick with the status quo with the implicit assumption that any pony can gain - and lose - "crystaliness" if they get exposed to Crystal Empire magic.