Tumbled Lava Stones Small (1/2"-1") 10-lb BagFeatures: Includes ten (10) pounds of stones per box. This is a natural product the color may vary from the picture. Generally lighter or darker, but mostly gray and black speckled appearance. One box in a single layer covers an area of approximately 12" x 12". *This is approximate since sold by weight. Tumbled for a smooth texture and uniform shape. Stones require no maintenance. Compatibility: Indoors Outdoors Fireplaces Gas Log Sets Gas Fire Pits