éJewelry maintenance and Precautions 1.Please avoid chemicals,cosmetics,wine,acid and alkali; 2.Don't expose your jewelry under strong sunlight or high temperature to avoid metal or stone color fade; 3.Please take it off when taking shower, washing hands or dishes and taking excising; 4.Pls wipe your jewelry with clean soft cloth. About the size measurement The paper measurement is intended for reference only. We would like to suggest you have your finger sized at a jewelry store for an accurate ring size. Any questions, please post it in "Customer Questions & Answers ",you'll get more help from us or other customers who bought this ring.é