How did the red coral (jewelry) turn white?

The surface of red coral turns white after being worn for a long time. This is because the human body will sweat a lot in summer, and there are acidic components in the sweat, which will cause chemical reactions. The best way is to wash the red coral jewelry with clear water every night after wearing it to wash off the sweat sticking to it to prevent chemical reaction. If it turns white accidentally, you can wash it with clear water, dry it with a soft cloth, and apply baby oil to restore the red color. Coral jewelry should not be worn for a long time in summer.