Firegear GL-CRYSTAL-10 1/2” - 3/4" Crystal Clear Broken Fire Glass 10 lbs - Fire glass is a great replacement for logs if you are seeking a modern heating element. Unlike regular glass, fire glass is designed to withstand high temperatures and will not melt. It creates a visual effect that is unique and captivating. This fire glass features a crystal clear color. The pieces have a broken design, providing an edgy look. Pieces range from 1/2” to 3/4” in size.