A little texture never hurt anyone, as a matter of fact we love texture.
Cold Characteristics
Although termed an opal due to its almost total lack of light transmission, this is (in terms of its composition) actually a transparent glass.
Working Notes
Low viscosity. Will flow sooner and more than other glasses. In very thin sections the color may vary from reddish/gray to bluish/gray.
Photo above is an image of the glass, actual color may differ slightly.