2. Platinum: Avoid hooking, pulling, dragging and pressing when wearing, especially hard body chains. Not suitable for wearing with gold jewelry at the same time. Because gold is soft, if it rubs against each other, it will not only damage gold ornaments, but also dye gold on platinum and make it yellow. Platinum jewelry has been worn for a long time, and its surface is dark or partially discolored. Go to a professional jewelry store for cleaning and protection.
3, jade: hard and brittle, easily cracked or broken by external forces, avoid external force collision or falling when wearing. Avoid contact with high temperature to avoid cracks caused by jade water.
4. pearls: if they are not properly maintained, they will lose their charming luster. If you don't wear it, rinse it with pure water and store it in a soft silk bag. Avoid contact with acidic or alkaline substances and high temperature. When doing sports, doing housework and taking a bath in the bathroom, you should take off your pearl jewelry.
5. Caibao: Ruby is resistant to strong acid and alkali, and its hardness is second only to that of diamond. When exercising or doing housework, you should also try to avoid it, so as not to damage or fall off the gem.
6. Gold: Pure gold jewelry is prone to chemical changes with metals such as mercury and lead, causing white spots on pure gold jewelry, but it can recover its true color after burning.
7. Precious metal: avoid abrasion in harsh environment or contact with acid and alkali environment, so as to avoid corrosion and fading of surface metal coating.