Metal clay is made from extremely fine particles of recycled metal, mixed with organic binders and water. You shape it, then leave it to dry, and then fire to burn off the binder, then you're left with solid Copper. Hand drawn/carved. Tarnish Resistant 304 Stainless Steel Split Key Ring Size: about 12mm diameter, 1mm thick. Can be added onto a bigger split keyring or lobster clasp. Amulet size Approx. 17mm by 10mm Weight: 2.04g. Black patina has been used and then a thin layer of Midas finish seal lacquer. Over time, copper develops a unique green patina seen on the Statue of Liberty in New York City. With the thin layer of lacquer, it should help to prevent tarnishing and oxidisation. Caring for your Items: Avoid harsh chemicals, ultrasonic, or Steam cleaning. Cleanse with warm soapy water and a soft brush then towel dry. Keep out of reach of small children/babies and pets (not for nibbling on) Please remember, Bindrunes help bring positivity into people's lives, but they are never a substitute for medical advice. If you have concerns about your physical or mental health, you should immediately contact a qualified medical professional.