Element Fire Glass Black Zircon Diamond Fire Glass is coated with an iridescent glaze to add depth and texture to any fire unit. This ultra modern black fire glass is ideal for long term use in any indoor or outdoor gas powered fire unit. Instantly enhance your space with this eye-catching glass. Our Black Zircon Diamond Fire Glass is easy to install durable and looks great year round with or without your fire lit. Enjoy your glass as your fire dances atop creating memorable evenings.