We also provide 925 sterling silver models, please refer to: https://www.pinkoi.com/product/sQmVgcW6 | Dimensions | Open ring size can be tiny adjusted Ring size around # 10 to # 14 (inner circle 5.04cm~5.65cm) https://farm5.staticflickr.com/4816/46713296232_63b9c5be72_z.jpg | Material | Brass | Package | Box Zipper bag | Pure Brass Maintenance | -Prolonged exposure of brass to water may lead to oxidation and discoloration. -Please avoid water when wearing your brass jewelry. -If brass becomes tarnished as a result of discoloration or oxidation, please use a silver cloth and wipe the jewelry in one direction. This should restore luster to the brass. -To avoid oxidation, when not wearing, wrap your brass jewelry in tissue papers and put it in a plastic zipper bag.