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1 tablespoon salt
1 tablespoon baking soda
1 tablespoon dish detergent
1 cup water
1 piece aluminum foil
1. Heat water in the microwave for 1 or 2 minutes.
2. Cut a piece of aluminum foil that roughly covers the bottom of a small bowl (like a cereal bowl).
3. Pour hot water into the bowl, and add salt, soda, and dishwashing liquid to it. Place jewelry on top of foil, and allow it sit for 5-10 minutes. Rinse the jewellery in cool water and dry thoroughly with a soft cloth. Discard solution after use, and make a new batch next time.
4. According to wire-sculpture.com, “this works well for gold-filled, brass, german (nickel) silver, and sterling silver. I have even cleaned jewelry with freshwater pearls, shell cameos and mother of pearl with no problem.”.