American Fire Glass AFF-GDRF12-25 BUCKET 1/2" Premium Gold Reflective Fire Glass 25 lb Bucket. The delicate shining process behind our premium fire glass results in each individual piece containing a smooth, flat reflective side that works almost like a mirror, allowing each piece to twinkle in the flames of the fire and in turn makes the glass almost as much of a spectacle as the flames themselves. Fire glass does not only look amazing at night under the flames of a fire, but during the day as well.