Take a look around the house to use one of the following natural items to naturally polish your Tamba copper jewelry. There is no need to use harsh chemicals to polish.
Vinegar and salt: Rub a mixture of 1 tablespoon of table salt and 1 cup of white vinegar onto the copper with a soft cloth and rinse. Or, immerse the tarnished copper into a pot of 3 cups of water and the salt-vinegar mixture, bring to a boil and boil until the grime and tarnish come off. Once the copper is cool, wash it with soap and water, rinse and rub with a soft cloth.
Ketchup: Not just for your burgers, a small amount of this common kitchen condiment can be rubbed onto tarnished copper to restore its natural luster. Then rinse and dry.
Lemon: To naturally clean copper pots and pans, and less fragile copper pieces, cut a lemon in half, add salt to the cut side and rub gently onto the item. You can also make a paste with lemon juice, and equal parts salt and non-oxidized cornstarch or baking soda.
Baking soda: Combine this mineral with lemon juice to clean copper naturally, or sprinkle just baking soda onto a cloth and polish the tarnished copper.