Multi Color Tourmaline plain rounds measure approximately 3mm average in diameter, have a vitreous luster, great polish, a symmetrical round shape, gemstones are transparent with only slight internal characteristics, bead colors have pure hues of forest green, emerald green, mint green, Rubellite, pink, indicolite, bi-color, yellow, and colorless, and these Tourmaline beads show a very consistent quality and pure tone throughout the group.