Sterling silver, Thick glass globe, with lichen sealed and protected inside. The ring is constructed with sterling silver, with a copper backplate to draw out the color of the lichen and features a decorative bezel. Please specify size in your order and allow one week for fabrication.All of the work you see is created my by own two hands from start to finish. I make wearable works of art and pay meticulous attention to detail and craftsmanship. Thank you for supporting small businesses and the arts! I wholeheartedly appreciate your business and hope we might have a lasting relationship.