Elegant Cobalto Calcite Druzy one of a kind ring, fit for a goddess. The materials are sterling silver, fine silver bezel, 18k. The surface size of the ring is 1 x 1. The ring is a size 7. all is oxidized. 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.