American Fire Glass Gray Lava Stone, 20 pounds, Large 2-4 InchThe American Fire Glass Gray Lava Stone, 20 pounds, Large 2 4 Inch provides a premium media option for your gas fire feature. These natural lava stones offer a long lasting and durable option, while their gray black coloring offers a neutral appearance in any design scheme. These stones are resistant to extreme heat and can handle many hours of direct contact with flames without discoloring or breaking down. Best of all, these stones make a cost