What are the treatment methods for copper jewelry?

What are the treatment methods for copper jewelry? To protect the luster of copper jewelry, you can apply a thin layer of nail polish on it. If there is a black silver film on the surface, you can use 2 grams of salt, 7 grams of baking soda, 8 grams of bleaching powder, and 60 milliliters of water to prepare a'goldware cleaning agent'. Put the copper jewelry in a bowl and pour the cleaning agent. After 2 hours, take out the copper jewelry, rinse it with clean water (not hard water), bury it in sawdust and dry, then wipe it with a soft cloth. The copper jewelry ring inlaid with gems is rolled with a matchstick and a piece of cotton is rolled, moistened in a mixture of toilet water and glycerin, and the frame is scrubbed, and then the ring is polished with a flannel. Do not use sharp objects such as blades to scrape. Salt and vinegar are mixed into a cleaning agent, which can be used to wipe copper jewelry to make it new for a long time. Toothpaste wipe or scrub with hot thick rice soup can also restore the luster of copper jewelry. Take the soot and the same amount of vegetable oil, put the copper jewelry into it and scrub it, it will make the gold jewelry shiny. If the above method does not help you, it is recommended to send it to the copper jewelry store for specialized technicians, reagents, Ultrasonic cleaning and other equipment for cleaning.