Jasper Wind Chime, Green, 19inSquare lines & stone accents creates an air of simple sophistication. The relaxing sound of this wind chime comes from a special tuning based on the "Golden Ratio." Discovered by the ancient Greeks, this ratio also appears in the Fibonacci sequence and can be used to define the proportional patterns that are found in the structure and design of familiar garden inhabitants such as the sunflower and snail. Jasper, an opaque rock, occurs in many colors.