AUGUSTINE Women's Tungsten Ring with Light Blue Carbon Fiber Inlay - 4mmPremium sky blue carbon fiber is joined together with the awesome strength of Tungsten Carbide to create this line of unique Comfort Fit Tungsten Rings by Thorsten Rings. This ring is a flat style with beveled edges and the light blue carbon fiber is inlaid seamlessly into the center. Thorsten is proud to be one of the few manufacturers in America to carry a blue carbon fiber tungsten ring for women. This style is also available in 6mm, 8mm, and 10mm