Silver ornaments turn black because silver reacts with sulfur in the air to produce black silver sulfide. Therefore, silver jewelry should not be in contact with perfume, powder, balsam, sulfur soap, sweat and acid. In order to restore the luster of silver jewelry, the following methods can be adopted:

(1) Wipe with cotton dipped in white vinegar, black silver sulfide will dissolve in ester acid, and silver jewelry will glow again.

(2) Wipe with alcohol or sodium carbonate, and the effect is also very good.

(3) Wash the surface of ornaments with detergent, then with sodium thiosulfate solution (prepared by adding 20g sodium thiosulfate into 100g water), and then with clean water.

(4) mixing l parts of tartaric acid, 1 part of alum and 10 part of salt, heating to boiling, and soaking jewelry; /kloc-take it out after 0/0 minutes, wash it with clear water and dry it.

Related instructions

If the silver ornaments are found to be yellow, the easiest way is to gently wash the surface with toothpaste and water, or clean the fine seams of the silver ornaments with a small jewelry brush, and then gently wipe the surface with a silver cloth, so that the original beauty of the silver ornaments can be restored immediately.

If the silver cloth can restore about 80% to 90% silver, don't use silver lotion and silver washing water, because they are corrosive to some extent, and silver ornaments are more likely to turn yellow after using these products. In addition, silver cloth contains silver maintenance ingredients and cannot be washed with water.