2, skin allergy: 999 silver jewelry is also alloy jewelry, the surface of this kind of jewelry is usually plated with a layer of pure gold or pure silver material, but after long-term friction with the skin, nickel, chromium, lead and other components in the jewelry will be exposed, causing irritation to the skin.
3. Groups that are prone to secrete excessive sweat: The sweat discharged by the human body is acidic and can decompose the coating on the surface of jewelry, thus causing damage to the skin.
Precautions for wearing silver ornaments made of ductile materials:
1. Pay attention to the "radioactivity" of gold and silver jewelry: because gold and silver ores often contain radioactive elements such as cobalt, polonium and radium, a small amount of radioactive substances may remain in jewelry during the process of mining, smelting and making jewelry, which is harmful to human health. Even so, qualified gold and silver processors will treat it to reduce radioactivity.
2. It is normal that the color of the silver bracelet becomes darker during wearing: sulfur, nitric acid and oxides in air and other natural media have a certain corrosive effect on silver. Silver jewelry may form a layer of black silver sulfide on its surface after being worn for a long time. Silver sulfide is gray-black, so with the intensification of the reaction, silver sulfide increases and thickens, and the surface color of silver gradually turns from white to yellow to gray, and finally turns black.
People's Network-The brighter the silver bracelet, the healthier it is. Is it true?/You don't say.