Approximately 10x14x7mm sodalite faceted puffed rectangles. There are 26-32 beads per 16" strand. Sodalite, This stone is not always available, so order now while supplies last. Sodalite consists of a sodium aluminum chlorine silicate that is almost identical in composition to lapis lazuli. Questions? Call our friendly sales staff at 1-800-366-2156, or email us.