Tenmoku pottery:Tenmoku (also spelled “temmoku” and “temoku”) is a dark glaz
Tenmoku pottery:Tenmoku (also spelled “temmoku” and “temoku”) is a dark glaze with a surface that resembles oilspotting.It is made of feldspar, limestone, and iron oxide. The more quickly a piece is cooled, the blacker the glaze will be. Tenmoku takes its name from the 天目 (Mandarin: tiān mù; Japanese: ten moku; English: Heaven’s Eye) mountain temple in China where iron-glazed bowls were used for tea.Tenmokus are known for their variability. During their heating and cooling, several factors influence the formation of iron crystals within the glaze. A long firing process and a claybody which is also heavily colored with iron increase the opportunity for iron from the clay to be drawn into the glaze. While the glaze is molten, iron can migrate within the glaze to form surface crystals, as in the “oil spot” glaze, or remain in solution deeper within the glaze for a rich glossy color. (wiki)1. Chawan, pottery tea bowl with black tenmoku and blue glazes2. Blue Tenmoku glazed sake cup by Kamada Koji -- source link
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