H: 8 cm
D: 8 cm

This Jar, with a short neck and four shoulder lugs, has the glaze resembling tortoise shell. To make a tortoiseshell-glazed vessel, craftsmen firstly applied a layer of glaze rich in ferric oxide all over the vessel and then randomly sprinkled another glaze low in ferric oxide over the previous one. When fired, the two glazes mingled to form unpredicted patterns. Primarily in the shapes of vase, jar, incense burner, and bowl, tortoiseshell-glazed vessels are common products of the Jizhou kiln.