They are sterling silver and stamped on the back. A star and a moon with cut out stars and moons as well. Please see all photos. Bundle and save! The more items you bundle the deeper the discount and it also saves on shipping! Offers always welcome. It never hurts to ask! Color and metal tones may vary slightly based on lighting, phone screen or computer screen adjustments. Photos are taken in white light with no filters. Please see all photos and feel free to ask questions or ask for additional photos.