What is a good way to clean a metal necklace?
In a small bowl, combine 2 parts baking soda and 1 part water to make a paste. ...    Dip a soft-bristled toothbrush into the mixture. ...    Gently scrub your jewelry with the toothbrush. ...    Plug the sink, then rinse the jewelry using warm water. ...    Gently pat the jewelry dry with a soft towel.