Fireglass Fireplace Fire Pit Glass~1/4" Copper Reflective, 5 LBS "Reflective" fireglass is tempered glass with one side metallic/mirror-coated Highest quality fireglass glass on the market Product made by Fireplace Glass San Diego Package includes 5 lbs of ~1/4" Copper Reflective Fireglass This glass has been tested and will not melt or discolor, if properly installed and used