Add this Small Lava Rocks - 10lbs to your fireplace or fire pit. Use as a filler under fire glass or as the center of attraction. Use our calculator to determine how much you will need for your project.
These small natural volcanic cinders are dark, glassy, vesicular fragments. Produced by gas-rich eruptions, these cinders are guaranteed fire-safe and work wonderfully in all outdoor fire features. They lend a natural look to complement your fire pit project. Since these rocks are naturally formed, their size varies between 1/4" and 1/2", and various shapes.