Fun one of a kind blue opal petrified wood earrings, great with jeans and casual. They are set in sterling silver, with fine silver bezels, oxidized with a French hook. The size of the earrings are 2 1/2 x 1/2. Please note the fine silver bezels 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.