Made of linen paper, water-dried paper, and mixed media. The frame is coated with gold, so it may be displayed without a frame. The kingfisher is said to be a blue jewel and is a very beautiful bird. Since the Muromachi period (1333-1573), it has been called "jade" in Chinese. Japanese painting is based on a style of painting that has existed for more than 1,000 years, and uses traditional materials that have been cultivated throughout history. It is a technique of painting on Japanese paper, silk, wood, etc., using natural paints such as sumi ink, iwa-enogu (mineral pigments), gofun (gofun), etc., and glue (nikawawa) as an adhesive. Gold and other metal materials (gold leaf, etc.) are also used. Iwa-enogu, made from ores, is a beautiful, sand-like powder. Mizuhigure, made from clay, is a fine, stretchy paint with fine particles. Artificial versions of iwa-enogu and mizuhoshi egur are also made, and are available in a wide variety of colors. Goko, made from shells, is a white pigment with fine particles.