Ships within 1 day. Lovely, elegant blue diamond wedding ring in .925 sterling silver with black rhodium plating. The sparkling 0.25 cttw round shape blue diamonds are natural and irradiated. The width of the ring is 2 mm. This ring is available in multiple sizes. Gift box is included with purchase of this ring. Stone Type - Natural Blue Diamond. Metal - 925 Sterling Silver. Diamond Carat Weight - 1/4 cttw (0.25 cttw) Diamond Cut - Round. Diamond Color - Blue. Diamond Clarity - I1-I2. Vir Jewels Sterling Silver Wedding Band For Female Adult. Birthstone Month - April. Natural diamonds are treated by irradiation to produce a variety of fancy colors including hues of blue. This process is permanent and does not alter any other property of the diamond except the color.