Fortaluxe Superwhite is reinforced with alumina oxide or magnesium oxide for durability. It is glaze, thermal shock and edge chip resistant. This Fortaluxe SuperWhite vitrified china 16 piece place setting includes 4 each-10 5/8 inch dinner plate, 8 inch salad/dessert plate, 9 inch rim bowl, 8 ounce stackable coffee mug in the Cassia collection. Cassia is a beautifully defined, classic shape with a varied plate well for every style of cuisine and portion.