This mixed shape stack has five rings including 1 densa (5mm) silver round, 1 densa (3mm) oxidized silver square, 1 thick rose gold square, 1 thick yellow gold round, and 1 thin two-toned silver and yellow gold square. Rigid, yet extremely comfortable due to its softly rounded edges. This ring is available in sizes 5.0 – 9.5, including 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: sterling (.925), 14k rose and gold fill (14k gold over a brass core, no nickel), hypoallergenic. This ring set is handmade in our California and New York production studios.