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. We hand carved and oxidized the channel where the diamonds are set. The oxidation is protected within the channel and is therefore better preserved over time. We love how the diamonds really pop against the oxidized channel. This bangle bracelet was designed in San Francisco and is handmade in our Upstate New York production studio.