Men's 3-Stone Diamond Past, Present, Future 10mm Comfort Fit Cobalt Band (.30 Cttw, GH Color, I1 Clarity) Three Hand-Set Diamonds are Bezel Set on a Slightly Domed Band, Comfort Fit, Ridged Band is Crafted in High Polished Cobalt Comfort Fit Ring Measures 10.00 Millimeters Wide Diamond Ridged Band is .39 Inches Wide Cobalt is Brighter and Stronger than Platinum and Keeps its Shine and Luster Hand-Set Diamonds are Ethically Sourced Conflict Free in Compliance with Kimberly Code of Conduct