Type... Domestic mineral, 5 pieces of Nishiki-koseki from Sado. These are now hard-to-find raw stones (shoshin-seki). The base is made of clay and can be removed. #Red Ball Stone #Suiseki #Red Stone Height: approx. 30mm, Width: approx. 50mm, Depth: approx. 30mm, Weight: approx. 172g (the size is almost the same, the weight of all 5 pieces) When water is applied, the color changes to the color when polished. Water basin and sand are not included. Sado Nishiki-koseki is characterized by its beautiful color, which is mainly red.