This rigid square stack has five rings including 1 thick (3mm) silver, 1 thick (2mm) gold, 1 thin silver, 1 thin oxidized and 1 thin gold. Rigid, yet extremely comfortable due to it’s softly rounded edges. This ring is available in sizes 5.0 – 9.5, including all half sizes. Special note: because of the wideness of the stack ring set, it is recommended to buy a stack that is approximately a half size larger than your normal ring size. Materials: 14k rose gold-fill (14k rose gold over brass core/no nickel), oxidized silver and sterling silver (.925). Additionally, the 14k gold-fill, oxidized and sterling silver version is also available. Click on the drop-down menu to choose your size and desired metal combination. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. This ring set is handmade in our California and New York production studios.