Peterson Real Fyre 24-Inch Black Granite See-Thru Fire Gem Set With Vented Propane G45 Burner - Manual Safety Pilot. GLG-10-B(3) + G45-2-GL-24P. Fire Glass & Stone Sets. Appearing almost molten under the flames, these specially formulated tempered fire gems have been tumbled to remove all edges, making them smoother than standard fire glass. Black Granite Fire Gems are featured in this set and includes enough to fill the burner pan. Designed to run on Propane, the main burner of the G45 emits generous undulating flames enhanced by a conspicuously effective front ember burner. See-Thru burner design allows the fire to be enjoyed from either side of the fireplace. The vented G45 burner provides hour after hour of hypnotic glimmering flames. Lit with a push button ignitor, the manual safety pilot is simple to operate. The manual safety pilot will automatically close the valve when the flow of gas to the burner is disrupted or the pilot light is extinguished.