Crafted of Stoneware, featuring a reactive glaze. Due to the nature and hand-crafted qualities of reactive glaze, no two pieces are exactly alike and will exhibit unique variations in color and pattern. Product may slightly differ from image shown. 48 piece square blue grid dinnerware set, service for twelve, includes (12) each: 10-1/2 inch square blue dinner plate, 7-1/2 inch square blue grid salad plate, 6 inch diameter (24 ounce) blue cereal bowl, and 13 ounce blue mug. Microwave and dishwasher safe.