This his & hers set of rings features two beautiful black ceramic bands inlaid with violet opal & blue fire opal that flickers deep blue & red colors in the light. The rings are also inlaid with a glowstone that glows a faint green in the dark. This set includes an 8mm thick men’s band & a 6mm women’s band. The bands of the rings are beveled on the inside for a comfortable & smooth fit. Black ceramic is extremely strong & scratch-resistant making it a perfect material that will last a lifetime. The ceramic also makes a great replacement for anyone with metal allergies as the band itself is made without any metal. His & Hers Wedding Ring Set. Galaxy Fire Opal Ring. Black Ceramic Glow Set With Violet Blue Inlay. Sizes 5-13