This 4mm-wide black and white bangle bracelet features multiple 1.0 and 1.5mm diamonds set in a sunken, blackened (oxidized) channel. Our bangle bracelets 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 is designed in San Francisco & handmade in our Upstate New York production studio.