Diameter: approximately 8cm Height: approximately 8cm Origin and artist unknown. This is a large yunomi (teacup) with a generous amount of haiyu (ash glaze) / shizen-yu (natural glaze). It could also be used as a mukouzuke (small serving bowl). Judging from the natural glaze, hi-iro (reddish-brown color), and stone haze (bursts), it looks like Shigaraki ware, but I'm not sure. There is a signature on the back, but the artist is unknown. It's a large size, perfect for enjoying a generous serving of bancha (roasted green tea). There are no cracks, chips, or flaws acquired after its creation, but the finish itself is rough, and some people might perceive it as having chips or cracks. This is a used item. (Inspection by a non-professional)