How do you clean rust from metal jewelry

How do you clean rust from metal jewelry<br /><br />What is the metal? Sounds like either pot metal, copper or brass. If its brass the green stuff is not good for you. You can clean copper with anything with a light acid base like vinegar, ketchup, lemon juice. you have to leave it on there a while. Some suggest with these items that you use salt as a light abrasive. None of these things would hurt metal. If there is a stone in the metal that is a different story. Soak the rusted material for as long as it takes to turn all the rust or whatever into grey sludge could be a week or more for heavily rusted metal, and then rinse/scrub it off with clean water.The mixture takes away the rust and leaves the metal.I thought it was a joke when I first heard of this method, so I tried it on some old car parts, and was surprised how good it worked. Also molasses wont harm you. Horses eat it, so you could probably get it at a pet or farm supplier.