1/4 Carat T.W. Black Diamond Sterling Silver Semi-Eternity Ring: * Crafted in sterling silver * 1/4 ct. t.w. * Fancy black diamond color * Channel-set stones * Round-cut diamonds * Available in sizes 5-9 Every piece of Walmart jewelry passes rigorous inspection at our Quality Assurance labs. So you can buy with confidence — guaranteed. Learn More Learn about diamonds, including the 4 C"s — Color, Cut, Clarity and Carat Weight.