This 3-stack, hand-hammered bangle bracelet set includes (1) 4mm-wide black and white channel bangle featuring multiple 1.0 and 1.5mm diamonds, (1) 5mm silver bangle, and (1) 8mm silver bangle. Our bangle bracelet sets come in sizes small (2.1/2" diameter), medium (2.3/4"), or large (3"). A size medium will fit most wrists. Materials: Sterling silver (.925) oxidized sterling silver, and lab-created diamonds. All materials are hypoallergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. This bangle bracelet set is designed in San Francisco and handmade in our Upstate New York production studio.