How to get rust of belly button ring?

I went in the lake a lot this summer and the back of my belly button ring has rust on it. Is there like a rust remover that would be safe to take it off my belly ring?

No, no, no! If it has rust you just need to get a new one or use the best rust remover. Plus, it must not have been good quality to start with if it rusted. You need to get surgical steel or real gold/silver. Do not try to fix your rusty one!