The metal or mineral content is what created the basic color. Clay can be many different colors such as red, yellow, white, brown or gray. Pottery is most often used for less expensive ware. Red ware is the name for objects made of red clay, it can be thrown on a potter s wheel or simply molded by hand. It s brittle and can be easily damaged, it is usually coated with a glaze, because it has large pores and absorbs the liquids.
Yellow ware is English of American earthenware commonly used for kitchen items like mixing bowls.
These are not often marked. Stoneware is refined earth wares made of a combination of clays and gassy ingredients. Most stone wares range in color from light gray to brown and are durable, dense and lightweight when thinly potted. Spatter ware and sponge wares were both produced in the nineteenth century, and were used mostly for decoration. Spatter ware is earthenware that has been spattered with colored liquefied clay, usually blue or red.