This 5-stack short round silver and gold ring stack is made up of five rings. The mostly silver version includes1 thick silver, 2 thin silver and 2 thin gold rings. The mostly gold version includes 1 thick gold, 2 thin silver, and 2 thin gold rings. This ring set is available in sizes 5.0 – 11.5, including half sizes. Special note: Because of the width of the stack ring set, it is recommended to buy a stack that is approximately a half to a full size larger than your normal ring size. Materials: 14k gold-fill (14k gold over a brass core/no nickel), and sterling silver (.925). All materials are hypoallergenic. This ring set is designed in San Francisco and handmade in our Upstate New York production studio.