What should I do if the silver necklace becomes black for a long time? How to maintain it at ordinary times?

A, silver jewelry black processing method:

1, silver jewelry without oxidation treatment is easy to be oxidized and discolored. You can take the silver jewelry to the jewelry store for cleaning and polishing, and the silver jewelry will be completely new.

2. If the oxidation is not serious, you can rub the jewelry surface with toothpaste. Using toothpaste only brightens the silver jewelry temporarily, and then it will hurt the silver jewelry. It's best to take it to the jewelry store and let the salesperson wash it with silver.

3. There is a kind of silver polishing cloth on the market, which can easily polish silver ornaments, but only for those with certain hardness and smoothness.

4. If it is a soft necklace or hollowed-out carved jewelry, it is best to soak it in silver jewelry cleaning solution.

Second, the silver jewelry maintenance matters needing attention:

1, the best way to maintain silver jewelry is to wear it every day, because human oil will make silver jewelry glow warm and natural (there are exceptions, of course, some people's sweat itself contains ingredients that make silver jewelry black). When you don't wear it at ordinary times, you should put it away, and it is best to pack it in a closed bag to prevent the surface of silver ornaments from being oxidized and blackened by air.

2. If you want to make the newly bought silver jewelry brighter and avoid its discoloration, you can apply a thin layer of transparent nail polish on its surface, and then apply it every ten days. If you want to remove nail polish, you can soak it in banana oil and then wash it with water.

3. Don't wear other precious metal jewelry when wearing silver jewelry to avoid collision, deformation or wear.

4. Keep the silver ornaments dry, don't swim with them, and don't go near hot springs and seawater.

5. If the silver ornaments show signs of yellowing, clean the fine seams of the ornaments with a small jewelry brush, then drop a drop of silver rubbing emulsion on the paper towel to wipe off the black oxide on the surface of the silver ornaments, and then use a silver rubbing cloth to restore the original silvery white and brightness of the ornaments.

6. If the silver cloth can recover about 80% silver, there is no need to use silver lotion and silver washing water, because these products are corrosive to some extent, and the silver ornaments will turn yellow more easily after using these products. It is difficult for silver ornaments to turn white after many times of blackening.

Extended data

Silver is a relatively active precious metal, which easily reacts with sulfur or hydrogen sulfide in the air to generate black silver sulfide. This is also the reason why silver jewelry will turn black after use.

Long-term use of silver jewelry has little friction on the surface, and this phenomenon of blackening is more serious after being placed. The material of many silver ornaments is often silver-copper alloy, and this kind of silver ornaments should pay more attention to anticorrosion.

The result of oxidation of silver jewelry is yellow or red or black oxide on the surface, and the color varies with the degree of oxidation. Improper use of silver ornaments will greatly accelerate the oxidation speed.

No matter what kind of jewelry it is, it must be carefully cared for and cleaned regularly to keep its luster bright and intact.

Baidu encyclopedia-silver jewelry