Choose a regular jewelry store. Some places with large scale and good reputation are safer. You can also check the qualification certificate and business license of the jewelry store.

Second, weigh your jewelry accurately before cleaning and record it; When cleaning jewelry, smell the cleaning liquid. If the solution gives off a pungent smell, it is "aqua regia", so be careful. After processing, go to other departments in time to weigh again.

The third is to ask for bills when paying fees after cleaning. Once the operator is found to be fraudulent, he should report it to the relevant departments in time.

Household cleaning methods of gold and silver jewelry;

Gold jewelry cleaning

First, soak the jewelry in 30% sulfuric acid cleaning solution for 5 minutes, clean it with a soft brush, then rinse it with tap water for 5 minutes, finally soak it in 20% shampoo or detergent for 10 minute, then brush it, rinse it with clear water for 20 minutes, and finally dry it with silk. Remember not to use irritating products such as fluoride toothpaste or bleach for cleaning.

What are the precautions for cleaning gold and silver jewelry? Now you know, silver jewelry should be soaked in cleaning solution for 10 minute, then washed with a soft toothbrush, and finally washed with clear water for 10 minute. Don't touch items such as perm water, or white spots will appear.

Gold jewelry will "slim down" in the cleaning solution because some unscrupulous jewelry processors add nitric acid to the hydrochloric acid solution used. Gold baked at high temperature will dissolve unconsciously after being soaked in this highly corrosive solution for 20 minutes. This mixed solution of hydrochloric acid and nitric acid is the so-called aqua regia, which can dissolve precious metals such as gold and platinum and release gold. These "kings" who dissolve gold,