Cup is made from stoneware clay with a buff speckled color The cup is 4-1/2"H x 3-3/8"dia and weighs 14-3/40z. The glaze was supposed to be a copper blue gloss, "water blue" but I reformulated it and it surprised me as a light green matt. (???) Obviously, I liked the glaze but I'll try again for water blue. The inside glaze is a white gloss liner glaze.