【Wide Range of Use】- Can be used in an indoor or outdoor fireplace that uses propane gas, natural gas or electric; can also be used in indoor glass fireplaces, outdoor firepits, fire tables, and fish tanks 【Sparkly & Luster】- Flames make the fire glass shine bright and beautiful 【No Melting or Fading】- Fire pit glass has strong corrosion resistance, heat resistance, fade resistance and retains heat effectively. Will not degrade overtime 【Easy Heating/Extinguishing】- The fire pit rocks itself does not burn. The glass retains some heat but does not remain on fire after you turn off the supply of gas 【Positive Environmental Impact】- Fire pit glass rocks is a brilliant addition for your fire pit and serves as a great alternative to traditional firewood 【Warm Ambience】- Put a layer of lava rocks down and then cover with firepit glass rock to give your fire a unique look. Stay warm and cozy on chilly nights Grisun Fire Glass for Fire Pit, High Luster Reflective Tempered Glass Rocks for Natural or Propane Fireplace, Safe for Outdoors and Indoors Firepit Glass