Beautiful Boulder Opal takes you on a journey into space looking down on mother earth. The Boulder Opal is set in sterling silver, with fine silver bezels, 18k and sterling silver wire beaded pearls necklace with a magnetic clasp. The length is 20″. Pendant is 2″ x 1″. 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.