Although gold is not easily corroded by other substances, it can react and dissolve with mercury.

At present, the high-grade cosmetics on the market, especially those such as freckle cream, contain a small amount of white mercury-reducing ingredients. When wiping, the ring worn on the hand often comes into contact with such substances.

Therefore, there is a chemical reaction between the surface of the ring and mercury, resulting in the phenomenon of white spots or whitening on the surface of the gold jewelry mentioned above.

Extended data:

Precautions for cleaning gold:

1, in order to protect the luster of gold jewelry, you can coat it with a thin layer of nail polish.

2. Ring inlaid with gemstones Roll a piece of cotton with popsicles or matchsticks, soak it in a mixture of toilet water and glycerin, scrub the gemstone and its frame, and then polish the ring with flannel. Never scratch with sharp objects such as blades.

3, salt and vinegar are mixed into a cleaning agent, and it can be used to wipe pure gold jewelry, which can make it durable.

4. Toothpaste wiping or scrubbing with hot rice soup can also restore luster.

5, available ammonia scrubbing.

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