Pure gold jewelry is prone to chemical changes with silverware, mercury, lead and other metals, causing white spots on pure gold jewelry, but the white spots will disappear after volatilization by fire. Try to avoid contact with the above metals when wearing. Diamonds are the hardest natural substance in the world. If they are put together, they are easy to scratch when rubbing against each other, so they should be stored separately in boxes or transparent clothes. Other precious stones and jade articles should be collected in the same way. No matter what kind of jewelry it is, it must be carefully cared for and cleaned regularly to keep its luster bright and intact.