925 sterling silver and stingray leather The leather comes from the undulate ray. This is not a protected species, it is bred in many places in fish farms. The leather is a waste product. Size: 10mm in diameter and 3.4mm in height (approx) The back is all silver Fish Farming, Silver Stud Earrings, Stingray, Silver Earrings Studs, Silver Studs, Jewelry Earrings Studs, Etsy Earrings, Etsy Accessories, Jewelry Earrings