Processing, color, design and functionality.
I already several times that some mills heard problems with it, to grind rock salt (rock salt / Himalayan Salt), because it is more massive than the sea salt.
At this point I can reassure everyone. The mill grinds everything without problems. Coarse, fine no problem and everything processed and super easy to use.
Whether you really Spülmaschien suitable, I can not say. But such a small part can also rinse briefly by hand I think.
So to me an absolute buy recommendation.