The reason for this is the following：

When silver is oxidized, it will turn black, and black rust will transfer to gold, which will lead to discoloration of gold and decrease the quality of gold. Gold and silver need special treatment to be put together.

Preservation of silver ornaments:

1, the best way to maintain silver jewelry is to wear it every day, because human oil can produce a natural and moist luster.

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

Keep the silver ornaments dry, don't wear them to swim, and don't go near hot springs and seawater. When not in use, you can gently wipe the surface with cotton cloth or paper towel to remove moisture and dirt, and put it in a sealed bag or box to avoid contact with air.

Preservation of gold ornaments:

1. First, store gold jewelry in jewelry boxes or suede, and get into the habit of not throwing it with other jewelry after wearing it to prevent mutual scratches.

2. Put the precious ornaments in a safe place and buy enough insurance. If you don't know much about the value of your jewelry, please take it to the local jeweler for evaluation.

3. Wash gold ornaments regularly. This can ensure that jewelry presents the best luster and lasts longer. The cleaning method of gold ornaments is the same as other precious ornaments; Use a jewelry cleaner sold in the market, or soak it in soap and water solution, and then gently wipe it with a soft cloth.

The gold preservation taboo of extended data;

It is normal that gold jewelry gradually loses its luster due to sweat and other factors. In this case, the customer needs to return the jewelry to the jewelry store for cleaning. Do not put gold ornaments and silver ornaments together to prevent the surface of gold ornaments from turning silver due to collision and friction.

When the gold ring and platinum ring are worn together, it is easy for them to rub against each other, which makes the surface of the gold ring locally white and platinum.

Mercury corrodes the surface of gold, and first-class cosmetics often contain a small amount of lead and mercury. If gold jewelry often contacts cosmetics for a long time, it will cause white spots on the surface of jewelry. Therefore, when wearing gold jewelry, it is best to touch cosmetics less. Go to a professional jewelry store to deal with it, and the white spots will be removed. Also avoid contact with vegetable juices containing chemical elements, such as mustard juice, cauliflower juice and fish scales.

References:

Baidu encyclopedia-Jin

References:

Baidu encyclopedia-silver

References:

Baidu encyclopedia-gold

References:

Baidu encyclopedia-silver