HALLEY Tungsten Carbide Black Opal Inlay Men’s Wedding Band with Beveled Edges - 8mm Inlaid with breathtaking Black Opal also known as the “eye stone”, a precious metal stone that absorbs and reflects the light beautifully and said to inspire love, hope, luck and happiness, this Tungsten Carbide wedding band by Thorsten also features polished beveled edges. Engraving available! See Pictures for Details. Does Not Delay Order. Includes Thorsten Lifetime and Lifetime Sizing Warranty (excluding re-engraving). Available in an 8mm width. Tungsten Carbide—the newest and strongest metal for jewelry that does not scratch easily. Note that the Opal inlay can be scratched. Comfort Fit – domed interior band slides over the knuckle easier with less friction.