Protect steel without paint. Answered

I decided to try my hand at making jewelry with a cheap piece of steel. Partly, because of price and partly due to not being able to find a large enough piece of stainless. It turned out great. However I know it will rust if I don't protect it somehow. I'd prefer not to paint it l, because of the work to buff it to a high shine. Any ideas on how to protect it from rusting when in contact with skin?