Fire glass, also known as fireplace glass or fire pit glass, is a tempered glass used in fireplaces, fire pits, and decorative settings where a controlled flame is present. It is manufactured to withstand high temperatures without melting, emitting harmful fumes, or creating ash.

Fire glass comes in various shapes, sizes, and colors, providing an aesthetically pleasing alternative to traditional logs or lava rocks. Fire glass doesn't burn, but rather enhances the appearance of the fire by reflecting light and creating a sparkling effect. Fire glass is typically made from tempered glass, which undergoes a heating and rapid cooling process to increase its strength and durability.

Fire glass is often used in gas fireplaces or outdoor fire pits fueled by natural gas or propane. Fire glass distributes heat more evenly compared to traditional fire materials and can be cleaned easily, making it a popular choice for both aesthetic and functional purposes in various fire features.