4mm Black Plated High Polish Tungsten Carbide Comfort Fit Wedding Band Ring (Size 5 to 10) - Contemporary Metals Bridal Collection - Jewelry Tungsten Carbide is one of the hardest metals on earth, making it quite literally scratch proof. **Does not apply for coated Tungsten Bands** New to the Jewelry World, Tungsten is growing to be one of the most popular choices for Wedding Bands Promptly Packaged with Free Gift BoxPerfect for gift giving. Orders over $30.00 Include FREE-SHIPPING Manufactured using only up-to-date manufacturing techniques ensuring excellent quality and value, and as always our tungsten rings are cobalt free.