Polished round semiprecious stones represent each of the planets, in relative size: Mercury (labradorite), Venus (picture jasper), Earth (spot sodalite), Mars (mahogany obsidian), Jupiter (tiger eye), Saturn (yellow jade), Uranus (amazonite), Neptune (cat’s eye), Pluto (poppy jasper). A rubberwood base is a beautiful, natural way to display their colors and inner iridescence. Base 8" long, 1¾" wide.