The Vision Grills Dual-Purpose Lava Cooking Stone/Heat Deflector is a smart alternative to traditional grilling surfaces. It is created using 100 percent natural volcanic lava stone that is naturally very good at conducting heat and will not crack or break under pressure from high temperatures. The Vision Grills cooking stone is extremely versatile and can easily be used with used for meat, seafood, vegetables and even pizza. It is specially designed to accommodate most barbecue grills and can even be used as a heat deflector when smoking.