These River Rock Stones can be used with any vented log set or fire pit to enhance its appearance. These smooth stone shapes come in an assortment of ivory, terracotta and ivory colors, and provide an earthy, yet contemporary look in any fireplace or fire pit. The stones are specially formulated to not crack or pop when used with fire. Includes 10 assorted stones. One box of stones will cover approximately 200 square inches of space (a 16 inch diameter circle).