Developed by The Geological Society of Japan, this laminated chart is a great tool for use with the Polarizing Microscope.  One side is printed with the Interference Color Chart, by Takenori Kato.  The other side is an Identification Chart For The Rock Forming Minerals By Polarizing Microscope, compiled by Akira Ishiwatari.  Size is 8-1/4" x 11-3/4".  Shipping weight 12 oz.  Made in Japan.