Type: Domestic mineral, Nishiki-koseki from Sado. This is a raw stone (shoshin-seki) that is currently difficult to obtain. The base is made of clay and can be removed. #Red Ball Stone #Suiseki #Red Stone Height: Approximately 22mm, Width: Approximately 76mm, Depth: Approximately 40mm, Weight: Approximately 80g (stone size only) The color changes to the polished color when water is applied. Water basin and sand are not included. Sado Nishiki-koseki is characterized by its beautiful color, which is primarily red.