Cosmic Metallic Silver and Blue Tenmoku Japanese Sake Cups This set includes two. These Japanese sake cups are crafted using the Tenmoku technique. A dragon is depicted in the center of the inside of each cup. (Both cups) The beautiful metallic silver is achieved by using an iron glaze, which changes its shine depending on the angle from which it is viewed. The combination with the blue is also beautiful. It's almost cosmic. What is Tenmoku? Tenmoku glaze, which contains a high amount of iron, is applied to the pottery, and the pattern is created by utilizing the environment in the kiln (temperature changes and reduction) during high-temperature firing. The world of Tenmoku glaze creations, despite their brilliant expression, is a series of painstakingly difficult firing techniques. Toshihiko Izutsu With over 40 years of experience, he continues to create and refine his Tenmoku ware, a highly challenging technique. His constant pursuit of perfection is what makes him a true craftsman. Size: Height 4cm, Width 9cm, Weight 70g and 75g