This classic flat precision-crafted Black Ceramic ring by Thorsten has a brushed "non-glossy" finish for those who prefer more understated elegance. Can be worn as a wedding band or promise ring by men or women. Engraving available! See Pictures for Details. Does Not Delay Order. Includes Thorsten Lifetime and Lifetime Sizing Warranty (excluding re-engraving). Black Ceramic will not scratch and does not lose its color. Available in 4 mm, 6mm, 8 mm, 10 mm and 12 mm widths for couples who want a matching set. Comfort Fit - domed interior band slides over the knuckle easier with less friction.