Skyflame 3-5 Inch Round Lava Rock Pebbles, 10 Pounds Natural Tumbled Stones — Open-Box, 13% Off

Natural Lave Rocks - Large lava stone of sizes from 3" to 5" with porous surface. (Stones are naturally occurring and may vary in size) High Temperature Resistance - Radiate heat at high temperatures without degrading, cracking, or crumbling. (Make sure the stones are well dried before burning) No Melting or Fading - Easy to maintain without ash, soot, or smoke, spend less time to clean Fire Pits/Fireplaces Decor - For use with fire bowls, fire pits, and fireplaces, either indoors or outdoors. Create a beautiful, uniform look, give your fireplace a "full" and natural look by adding lava rock around your log set Multifunctional - Improve flame performance by spreading the gas dispersion in all directions | base layer underneath fire glass or mixing with glass together| great in soil to retain moisture for plants | decorative landscape lava rock for garden, patio, ponds | covering the entire floor of a fire feature, effectively hiding the unseemly pipes and tubes Attention: Make sure the rocks are completely dry before burning or it may cause an explosion. If you hear a popping sound, stop burning immediately. You could use low heat to dry the stone. Tumbled lava stones can withstand extreme temperatures without degrading, cracking or crumbling.
This lava give a truly unique & stylish look to any gas fireplace and throw off quite a bit of warmth which is a refreshing change from the usual fire wood.
The best part is they require no maintenance at all.