Shades of blue dance throughout Marine Blue Fire Glass as light reflects off it and highlights its beauty. Perfect for interior and exterior applications, these crushed glass stones withstand intense heat and a range of weather conditions. Use Marine Blue fireglass for fireplace glass, fire pit glass, aquariums, and landscape features. This elegant, crushed glass is available in 0.25” and 0.5” thickness, is Greenguard Indoor Air Quality Certified®, and does not emit any soot, ash, or harmful chemicals. Marine Blue is available in 20 lb. bags.