The 1/2" Cobalt Reflective Fire Glass is not only a stylish and beautiful addition to any indoor fireplace, but also a dazzling accent to any outdoor fire pit. When unlit, the cobalt color is a rich, electrifying blue, but once set aflame, the gas flames rise up through the blue, transforming it into a brilliant royal purple. The reflective property of the fire glass further enhances the resplendent display, quickly becoming the focus of all attention.