I have only had three types of metal on as jewelry, silver, gold and stainless steel. My first ring was a cast sterling and turquoise ring that a I wore for a number of years, nice ring. The next ring is my wedding band which I have had on for the past twenty-six years, good years. The stainless steel was the back of my watch band but I don't wear watches any more I have a cell phone. I just remembered a forged steel ring with a burnt linseed oil finish that I wore for two years, it didn't rust. I never had a skin issue with any of them, no rash, blister or itching but get me near a tumbleweed and watch out.