Approximately 6mm faceted round gemstone beads. 60-74 beads per 16" strand. Turquoise Magnesite. These beads have been enhanced. Magnesite is a white or off-white stone that, when dyed, is an excellent substitute for higher priced turquoise. Dyed turquoise magnesite is often called "Chalk Turquoise". Center drilled beads. Questions? Call our friendly sales staff at 1-800-366-2156, or email us.