Chain Width:about 7mm. Discoloration is not a quality problem, and improper use. All of them will seriously fade the color of silver products. The silver will soon recover its luster. If the oxidation is very serious, you can soak it with silver wiping water and then wipe it with white cotton cloth.

Chain Width:about 10mm. Discoloration is not a quality problem, and improper use. All of them will seriously fade the color of silver products. (1) Q:Is this real sterling silver?. (4) Q:Why does silver turn black or yellow?.