Revol USA, LLC 646594 BA0830 Basalt MATT Slate Style Rectangular Appetizer Plate, 11-3/4-Inch 11-3/4 by 7-3/4-Inch Rectangular Slate Plate Oven safe to 572 degrees Fahrenheit; microwave safe; freezer safe to 4 degrees Fahrenheit; dishwasher safe; does not scratch; food friendly; non porous