One of a kind ring with a stunning boulder opal, will make a statement anywhere! The materials are oxidized sterling silver, boulder opal, fine silver bezel, 18k. The surface size is 1.50″ x 1″. The ring size is 7.75. Please note the fine silver bezel can take on a golden glow from the oxidation process. For care, please do not use a polishing cloth as that can alter the patina. You can swish in warm sudsy water, rinse and dry.