This captivating men's ring is crafted of scratch resistant Cobalt Chrome material. The band is plated with a Brushed Center and a 0.04 Real Black Diamond( stone is heat treated to improve appearance and durability).The Cobalt material is often used in the medical applications such as prosthetics. Cobalt Chrome Band will not chip, break or shatter. Occasional polishing may be required. All items come with a FREE Ring Box.