15 Inch Round Pizza Stone: Unicook 15 round pizza stone is made of natural cordierite and heat resistant up to 1,450 (787 ). Be sure to measure your grill and oven's interior and choose a stone that fits comfortably with at least 1 inch of clearance on all sides. Even Heat Distribution: The baking stone distributes heat evenly and maintains high temperatures for consistent cooking to prevent hot spots. No more soggy middles or burnt edges. Absorbs Moisture: The porous surface of the oven stone absorbs excess moisture from pizza dough, creating a crispy, golden pizza crust. Versatility: The pizza stone can be used on gas & charcoal grills, and in conventional and outdoor ovens.