1. Reasons for silver jewelry turning black The blackening of silver jewelry is a normal natural phenomenon, because the sulfur and oxides in the air and other natural media have a certain corrosive effect on silver. Silver jewelry worn for a long time, sulfur and silver combination will form a layer of black silver sulfide film on the surface of silver jewelry, began to appear as some small spots, vulcanization phenomenon intensified and slowly spread into a piece, forming what people usually call silver scale, become black, affecting the surface luster of silver jewelry, people usually mistakenly think that it is fading. The chemical reaction equation is 4Ag+H2S+O2=2Ag2S+2H2O. 2. How…

  “Silver jewelry care must see” There are many reasons for the oxidation and discoloration of silver jewelry, and more popular science can be searched on the Internet. 【Routine care】 Silver ornaments need our constant care. When we find that they are not so bright, we must take measures. At this time, we can take the following two measures: 1. Use a silver cloth, repeatedly wipe the silver jewelry, and never touch the water, because the silver cloth contains polish and stain remover 2. Dip a small amount of fluoride free toothpaste with a small toothbrush, dip a little water, brush foam on the silver jewelry, and then rinse with…