One of a kind and unusual stones in this elegant and very pretty pair of earrings. The materials are oxidized sterling silver, fine silver bezels, blue opal petrified wood and mosaic opal with sterling silver french hooks. The size is 2 3/4″ 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.