1, the best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster. 2. Don't wear other precious metal jewelry when wearing silver jewelry to avoid collision, deformation or wear. Keep the silver ornaments dry, don't wear them to swim, and don't go near hot springs and seawater. When not in use, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and put it in a sealed bag or box to avoid contact with air. If the silver ornaments show signs of yellowing, the easiest way is to gently wash the surface with toothpaste and some water. Or use a small jewelry brush to clean up the fine seams of the silver ornaments, and then gently wipe the surface with a silver cloth, and the original aesthetic feeling of the ornaments can be restored immediately. (If the silver cloth can restore about 80% to 90% of silver, don't use silver lotion and silver washing water, because they are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. In addition, silver cloth contains silver maintenance ingredients and cannot be washed with water. The silver ornaments have turned yellow seriously, so it's time to soak them in silver washing water.

Ag2O becomes silver oxide. Try or use reducing agent instead? Potassium, sodium, calcium, magnesium, aluminum, zinc, iron, tin, lead, (hydrogen), copper, mercury, silver, platinum and gold can be heated separately. Black silver is caused by oxidation, and silver oxide (Ag2O) is black, so the surface of silver will appear black. Therefore, strong reducing agent formaldehyde (HCHO) can be used to reduce silver oxide to silver through redox reaction. Another method is to clean or wipe with alkaline substances. This is because silver oxide is acidic and can be neutralized by alkaline substances. So is the ashes upstairs. It is because the ashes contain a small amount of potassium hydroxide (KOH), which is alkaline and reacts with silver oxide to remove black silver oxide. It is said that silver ornaments can also be wrapped in tin foil, sprinkled with broken characters, heated slightly on the fire, and silver can also be reduced by replacement reaction. 1 direct heating, but need to use protective gas (such as nitrogen) protection. 2G2o = 4ag+O2 is reduced by hydrogen. The reaction conditions are all heating. I just saw a good idea from girlfriend magazine: cut the drained cans, fill them with salt water, put the silver ornaments in, and take them out after 24 hours, and the silver ornaments will regain their original luster. Just try it. What I said is basically the same as that upstairs. I've seen it on TV and tried it myself. Very useful. Put the silver jewelry in tin foil, put a little salt in warm water for more than ten minutes, and it will restore its original luster. If you don't wear it, it may be sealed in a plastic bag and won't change color. Try it at home!