Read before buying!What should I do if the stone fall out,metal color wears off,stone fall out,turned finger green or received wrong item ?Sometimes Jewelry exist defects in production process, if you meet these issues, pls send us image of defective black gold ring first,we can send you new one for free. Black stone ring maintenance and Precautions 1.Please avoid chemicals,cosmetics,wine,acid and alkali; 2.Don't expose your black ring under strong sunlight or high temperature to avoid metal or stone color fade; 3.Please take it off when taking shower or washing hands; 4.Pls wipe black gold ring 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 balck gold ring.