This stud earring is polished silver with a black rhodium finish. They measure 12mm in diameter. The posts are 14k nickel-safe white gold and the silver monster backs are 10mm in diameter and are also blackened. The lentil (or if you're Canadian, Smartie) shape is lightweight and sits flat on the ear. The diamonds are GH SI2 in quality and color and weigh .07 tcw.