Starfire Glass 10-Pound (Fire Glass) 1/2-Inch Onyx Black Reflective Starfire Glass The Ultmate in Fire Glass Quality! "Reflective Supreme" Bonded Coating producing Glittering Mesmerizing Flames Premium Tempering process with consistent Jewel-Like color throughout Gently tumbled to remove sharp edges. Very safe and easy to install Replaces Existing Gas Logs & Lava Rocks for Modern Elegant look