J.Ros&eacute;e 925 Sterling Silver 0.8MM Necklace Chain Super Thin but Strong - Spring Ring Clasp Necklace, 18" Material:925 Sterling Silver. Width: 0.8mm, Length: 18in appr. Matches all your pendant necklace. Please be careful when wearing because these types are easily broken or messy. Stylish & Great for your love on Valentine's Day with High Quality and Elegant Jewelry Box. Warranty: If any problem of quality, can exchange the new one with same type, within 7 days after the receipt of her.