Thrown spiral pots

These pots were wheel thrown. They have a bulbous body that taper into a narrow neck. After bisque firing, I applied, more or less, an equal balance of  maroon and black that spiral upwards from the base of the body to the mouth, in between the maroon and black, the clay body is left unpainted, emphasizing it's natural color. I achieved the maroon color with the addition of red iron oxide and the black with the addition of manganese dioxide. Once my colors were painted on, I took my vases to a stoneware temperature of 1260^oC.