✦Please avoid chemicals,cosmetics,wine,acid,alkalis and so on; ✦Please do not expose your jewelry under strong sun or high temperature; ✦Please take it off when you take a shower and go to bed; ✦Store jewelry separately. And before storage, please clean the jewelry with a soft cloth; ✦Avoid scratches caused by hard objects, store the collar in a box when not worn, and protect it from moisture.