Sword tip Tea Cup Blue — Hand-Glazed Japanese Pottery by Koyo KilnGlazed in a settled, layered blue, this teacup holds its color differently depending on the light where the glaze pools it deepens, where it thins it lightens, and no two pieces fire to quite the same tone. Koyo Kiln forms and glazing each teacup by hand in Japan, working at a pace that allows every piece to be made individually. The result is a teacup that carries the marks of its making never perfectly uniform, always consistent in character.