These black and white channel continuous circle hoop earrings feature multiple 1.0mm diamonds. Each hoop measures 1.1/4" by 1.1/4" at its widest point. 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. Please note: This is a pre-launch of the new BLACK & WHITE collection so please allow 2-4 weeks for delivery. These hoop earrings are designed in San Francisco and handmade in our Upstate New York production studio.