Spanish Niche Design S925 Sterling Silver Wound Vi...

1. The reason why silver jewelry turns black
The blackening of silver jewelry is a normal natural phenomenon, because sulfur and oxides in the air and other natural media have a certain corrosive effect on silver. After wearing silver jewelry for a long time, the combination of sulfur and silver will form a layer of black silver sulfide film on the surface of silver jewelry, which begins to appear as some fine spots. After the vulcanization phenomenon intensifies, it slowly spreads into pieces, forming what people usually call silver scale, which turns black and affects the surface gloss of silver jewelry. People usually mistake it for fading.
The chemical reaction equation is: 4Ag+H2S+O2=2Ag2S+2H2O

2. How to clean silver jewelry after vulcanization?
Squeeze a little toothpaste, add a little water to knead a rich foam, wipe with a soft cloth until it is bright, the gap can be brushed with a soft-bristled toothbrush, and then rinsed with water. For complex components and chains, you can put them in foamed toothpaste water and rub them repeatedly, and then rinse them with water. When the vulcanization is serious, you can use professional silver washing water to clean them. Although imported silver washing water claims to be “silver-free”, silver washing water is a chemical agent after all, and it is recommended not to use it unless necessary.

3. How to maintain silver jewelry on a daily basis?
The best way to maintain silver jewelry is to wear it every day, because the oil of the human body will make silver emit a warm and natural luster (when, of course, there are exceptions, some people’s sweat itself contains ingredients that make silver black). When wearing, wipe the surface of silver jewelry with a soft cloth or a silver cloth every day to maintain luster and dryness. When not wearing, wipe the surface with a soft cloth to remove moisture and dirt, and place it in an airtight bag to prevent the surface of silver jewelry from oxidizing and blackening in contact with air.

Note: For more popular science related to silver jewelry, please check online.