Lava Rock is a natural fire pit media perfect for using as the first filler that goes into a large fire feature to cover up the gas piping and tubes. Lava rock is economical, one ten-pound bag of lava rock will fill as much area as twenty pounds of fire glass! You may use it alone, as a base for fire pit logs or stones, or add a layer of fire glass over top to create a beautiful modern focal piece. Because they are natural volcanic rock, they can withstand extreme temperatures without crumbling or exploding. Available in 4 rock sizes - 10 pounds per bag, you can stay consistent with multiple bags of the same rock size or mix it up with a few bags of each size for a unique look. Color ranges from black to brown. Lava Rock Specifications Type: Lava Rock Color: Brown to Black Use: In fire bowls, fire pits, and fireplaces Size: Small: ¼" to ½" in diameter Medium: ½" to ¾" XXLarge: 4" to 6" Weight: 10 lbs. per bag
