Crystal outfits/uniforms explained (along with some other extra stuff about them); To put it simply, these follow steven universe logic. They are part of their physical forms by default, but can be manually changed or removed if needed. The crystal you see on creatie's cloak and tsar's chestplate are not the crystals themselves though, those are purely decorative and can even be removed. The Steven universe logic is mostly limited to their outfits though, they don't really "poof" if they take high amounts of damage, instead their bodies crack where they're hit and if they take damage they can't easily regenerate they enter crystal form where they actually have even higher durability. You already need godly strength to break their awakened form, but their crystal form takes MUCH more, possibly collector level strength