There was a ring on my granite countertop last night. It was left by a coffee cup. No matter how many times I wiped over it, it was still there. But it seemed to fade just a bit. Then I remembered that this is stone and surface marks often disappear after a good rain. So I put a wet dishrag over the area overnight. Voila - no ring this morning. Now I have to remember to remove all ring makers before they have a chance to leave their mark.