This australian pipe wood fossil opal reveals pink and purples in its interior with ultra violet flashes across the surface when moved under the light. I've set this one in oxidized silver with brush strokes and dots of 18 gold around the surface of the bezel and ring band. Rubies, tanzanite and iolite are wrapped on 14k gold headpins and clustered at the lower edge. The ring band is about 4mm wide and measures a 7 1/2. I can readily enlarge this to a 7 3/4, please inquire.