The sculptural artwork on our Arctic Forest Salad Plates and Mugs is painted and glazed by hand over an eggshell base. Distinguished by an artisanal quality, each piece varies slightly and brings a fresh woodland accent to the table. Crafted of stoneware with a hand painted glazed finish. Set of 4; one of each design. Food, dishwasher and microwave-safe. Mugs: 4.5" diameter, 4.75" high; Capacity: 13.75 ounces no flaws never used