Dear customers,welcome to our Jewelry Store,we are so honored to serve for you. If you have any question,pls don't hesitate to contact with us. you can send us an Email,we will reply you within 12 hours Mermaid Ring Adjustable Open Ring & Blue Crystal Hypoallergenic Ring 100 Percent Brand New High Quality Material: This mermaidl ring is made of Acrylic+Alloy Size: Adjustable size for most people. About Our Jewelry Most of our jewelry are made by alloy stainless steel copper,plated by Gold Silver Rose Gold or Platinum,and other material like zirconia ,imitation pearl ,imitation gemstone,opal, rhinestone,we ofen used for jewelry. If you have any opinion on our product,pls tell us,if you are not satisfied with our product or service,pls tell us,we will try our best to satisfied you. Tips of Jewelry Maintenance and Protection 1) Please avoid contact with harsh chemicals 2) Please avoid wearing while showering/ sleeping 3) Please don't wear a long time, often replace your jewelry in summer 4) Frequent cleaning is necessary. Please use a soft brush to wipe the surface of the accessory and remove its surface stains