Kay Jewelers Men's Black Diamond Band 1/4 ct tw Round-Cut 14K White Gold- Men's Bands: This elegant 8.5mm band for him features round-cut black diamonds set in brushed-finish 14K white gold. High-polish edges and rope detail above and below the center provide contrast. The total diamond weight is 1/4 carat. The inner band is accented with a square hematite next to Neil Lane’s signature. Black Diamonds are treated to permanently create the intense black color. From the Neil Lane Men’s Collection.