Polychromatic Tourmaline Plain Tubes measure approximately 3x3x2mm to 13x10x5mm in size, have a vitreous luster with excellent polish, an asymmetrical plain tube body, and the gems are translucent with internal characteristics. The beads are a spectacular group of Polychromatic Tourmaline with hues of Pink and Green in light to dark saturations, and these Tourmaline beads are world class in character. AA Grade