This 3-stack square densa ring set comes in your choice of two color-ways and metal combinations. Choose between the two-toned or tri-toned variation of this design. The two-toned version consists of three rings including 1 thick (3mm) silver, 1 thick (5mm) silver, and 1 thick gold band. The tri-toned version consists of 1 thick (3mm) oxidized silver, 1 thick (5mm) silver, and 1 thick gold band. This ring is available in sizes 5.0 – 9.5, 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 or rose gold-fill (14k gold over a brass core/no nickel), sterling silver (.925), and oxidized sterling silver (tri-toned version only. All materials are hypoallergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish.This ring set is designed in San Francisco and handmade in our Upstate New York production studio.