Beads measure about 4.5x4mm to 6x4.5mm with some variation. These rare, A Grade Multi Color Tourmaline Faceted Oval Beads offer unique possibilities to design with richly colored Tourmaline beauties with a one-of-the-kind look. With 60 beads measuring 13 inches in length, these gemstone strands are a must-have for all fans of the myriad colors of fine Tourmaline.