Pretty, easy to wear anytime, one of a kind necklace with a bit of sparkle! the materials are Blue Opal Petrified Wood and titanium plated Quartz Druzy set in sterling silver with a sterling silver chain and a lobster claw clasp. The length is 20″. The pendant is 2 1/4″ x 1 1/4″. 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.