Does lava rock bore you to tears? Let's turn that frown upside down and make an eye-popping statement with beautiful media that is propane-friendly! It's a known fact that propane is heavier than natural gas. It will sink to the bottom of your feature, and even small pieces of fire glass will prevent it from circulating. This can lead to dangerous situations, which is why lightweight, porous lava rock is highly recommended as your fire media for propane burning features. However, with our line of stainless steel fire pit ornaments, you can jazz up those rustic stones while still maintaining safety precautions!