NEPTUNE Tungsten Carbide Ring with Black and Blue Carbon Fiber and Blue Sapphire Setting with Bevels - 8mmThis elegant and sophisticated ring by Thorsten incorporates a Blue Sapphire and is made from one piece of polished Tungsten Carbide by cutting a channel almost all the way around the ring, where a blue and black carbon fiber is inlaid. Engraving available! See Pictures for Details. Does Not Delay Order. Includes Thorsten Lifetime and Lifetime Sizing Warranty (excluding re engraving). Available in 8mm width. Other widths are available as a custom