Tenmoku glazing
Tenmoku glazing is a ceramic glazing technique characterized by dark, iron-rich glazes that produce deep brown or black surfaces, often with subtle patterns or color variations. The glaze type is historically associated with East Asian ceramics and became especially valued in tea culture.
Tenmoku glazes typically contain a high concentration of iron oxide, which produces dark tones when fired at high temperatures. Depending on the exact glaze composition and firing conditions, the surface may display a variety of visual effects such as glossy black finishes, brown tones, or complex patterns created by crystalline structures within the glaze.
The name Tenmoku derives from the Japanese pronunciation of Tianmu, referring to Tianmu Mountain in China. Bowls with this type of glaze were originally produced in Chinese kilns during the Song dynasty and were later brought to Japan by Buddhist monks. These bowls became highly prized in the Japanese tea ceremony.
Japanese potters later developed their own versions of Tenmoku glazes, which were used particularly for tea bowls and other tea utensils. Variations of the glaze may display distinctive surface effects such as speckled or streaked patterns produced during firing.
Tenmoku glazes appear in several ceramic traditions connected with tea culture and high-temperature stoneware.
