The Emile Henry Flame-Top Rectangular Baking Stone in Black is made of all natural materials and is manufactured using Emile Henry's proprietary Flame technology. The Baking Stone is made to withstand high oven temperatures. The glaze is micro-crazed to contribute to crispier crusts on breads and other baked goods. The Baking Stone can also be used on the grill. You can cut directly on the glazed stone without damaging or scratching the surface, plus it is easy to clean with soap and water or can be cleaned in the dishwasher. Can be used in ovens, both conventional and convection; and can also be used under the broiler. Can also be used on grills: gas, charcoal and natural wood. Measures 18? x 14". *Note: Not for use on the stovetop.