No The gold as a metal with strong chemical stability does not rust, so the real gold bars do not have to worry too much about moisture. However, the gold jewelry is different because the purity is not the same. Pay attention to the prevention of oxidation to affect the recycling price. At the same time, we must pay attention to avoid bumps with other items to cause losses to the quality of the jewelry. Try not to be too scattered when stored, so as not to forget to store the location for a long time. The chemical properties of silver are more lively, so it will form black silver sulfide with the sulfur dioxide in the air. When the surface of the silver decoration is oxidized and black, the following maintenance method can be used to restore the beautiful luster of the silver. 1. You can add soda powder to the water and clean it. 2. Wipe with silver cloth and silver cream [General jewelry shops should be bought, and you need to point out that: Silver cloth contains special potions and cannot be washed]. 3. Use soft cloth to wash the jewelry with some toothpaste, wash it with water, and wipe it with cotton cloth. (The effect of dental powder is good)
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