Want to add a touch of mystique to your fire feature? Celestial Fire Crushed Fire Glass in Onyx Black is a velvety dark color that looks dazzling in both daylight and beneath a flickering fire. You''ll be reminded of a star-filled night against the blackest sky!This type of fire glass is crushed, resulting in gravel-shaped pieces in a variety of sizes. The result is a natural "chunky" look with eye-pleasing texture. Crushed fireglass also burns differently because the jagged edges create more airflow between the pieces. That means larger, higher flames that create a brilliant lightshow.- Size: 1/2" to 3/4"- Weight: 10 lbs- Coverage: 200 Cubic Inches