Blue Cattleya" on hemp paper, colored foil (blue shell foil), mineral pigments, and gold ink. The panel is rather wide at 2.8cm thick and lightweight at 150g. It would be beautiful displayed as it is without a frame. The blue cattleya does not exist. Like the blue rose, it is a flower of illusion. 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, gofun, etc., and glue 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.