For years I wore my tiffany setting ring all the time. Never took it off. It had platinum prongs. do not wear it much now because rings bother me sometimes as my fingers swell at night. Never have I heard of it being harmful to wear rings to bed. Sure if they are big and have rough prongs I could see it. Remember most of the times people lose their rings is when they take them off. I never took mine off ever when I was wearing it and that is why I still have it.