Porcelain. Product size and shape varies in each item due to manufacturing process. Appearance of color glaze unevenness varies in each item. Some products may take on scorched-like texture on the surface. It is an unique glaze effect called "yo-hen", unintended color transformation show on the ceramic and porcelain after firing.
[4" pot] φ4.0 x H3.2 x W4.4 in [saucer] φ4.8 x H0.6 in
[5" pot] φ5.0 x H4.2 x W5.8 in [saucer] φ6.2 x H0.6 in