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….

  1. the Reason Why Silver Ornaments Turn Dark Silver Ornaments Turn Dark Is a Normal Natural Phenomenon, Because Sulfur and Oxide in Air and Other Natural Media Have Certain Corrosion Effect on Silver. When Silver Ornaments Are Worn for a Long Time, the Combination of Sulfur and Silver Will Form a Black Silver Sulfide Film on the Surface of Silver Ornaments, Which Will Begin to Show Some Tiny Spots. after The Vulcanization Phenomenon Intensifies, It Will Slowly Spread Flakiness, the Formation of What People Usually Call Silver Dirt Turns into Black, Which Affects the Surface Luster of Silver Ornaments. People Usually Mistakenly Think It Is Fading. Its Chemical Equation…