Pottery originating in Tamba, northwest of Kyoto (modern day Tachikui) dates to the Heian period during the twelfth century. Possibly the most wholly Japanese of the classical kilns, the earliest Tamba ceramics displayed virtually no Chinese or Korean influence in their forms and glazes. Early examples display iron rich, coarse clays, which on firing would change to colours ranging from dark reds through to cool greyish blue tones depending on...