3D printed in Stainless Steel with Bronze sintering – 3 finishes and 3 sizes. Stainless Bronze, Antique Bronze, and Gold Plated Pendants are 3D printed with stainless steel powder and a binder, then in a furnace liquid bronze replaces the binder to form an alchemy of metals with properties between stainless steel and bronze. (60/40). They are then tumble sanded with abrasives, polished and plated. All HOLOS Amulets are made here in the USA and are unconditionally guaranteed in quality and workmanship. If you ordered the wrong size or finish or just want to send it back, you are welcome to a return for an exchange or 100% refund within 30 days. Please contact us first. Small 3/4″ (19mm) diameter, Medium 1″ (25mm) diameter, Large 1.25″ (31mm) diameter. Thickness is half the diameter. These are mounted on a stainless steel split ring for mounting your keys, attaching to a zipper or as some do – add to their pet collar. Comes with gift pouch and card.