Ceramic Marble Coated Cast Aluminium 4 qt. Stockpot Non Stick Cookware (24 cm diameter) Ceramic Marble Coated Stockpot, 4 qt. Premium Quality Cast Aluminium with 4 layers of Non-Stick Marble Coating Marble Coating both inside and outside, 10x stronger than teflon coating Tempered Glass Lid Made in Korea ...the leader in termolon non stick ceramic materials