Hiland 10 lb Recycled Fire Glass in Amber. Add some elegance to your propane or natural gas fire pit with light brown amber fire glass. Flames will dance across each individual piece of glass creating an amazing ambiance to mesmerize you and your guest. Fire glass is available in a multitude of colors and styles to fit your most creative desires. This glass has been heat treated to with stand the scorching heat created by propane or natural gas fire pits so it will not deteriorate or break down creating a muddled mess in your backyard conversation piece.