Teapot Cast Iron Gold Purple ChrysanthemumDescription Kin Murasaki Gold Purple Chrysanthemum Cast Iron Teapot (Tetsubin). The Cast Iron Collection. 5 1 2" diam. x 4 1 8"h. 0. 65L 22 oz. capacity. Cast Iron. Dry thoroughly to store. Made in Japan by Iwachu Japan. Before use: Fill the pot with boiling water to rinse and warm your pot. Not for use on the stovetop. After Use: Allow teapot to cool completely after each use before cleaning. Do no use soaps or detergents. Avoid contact with salt