From the internet: Also called azagba, zagba, or adjaba, these large powder glass beads are made by the Krobo people of Ghana. Usually formed in clay molds, the beads measure up to 5 cm long and range from nearly cylindrical to barrel shaped, and sometimes biconical. Adjagba typically have a yellow or ochre matrix with a grainy texture, which is decorated with longitudinal stripes, often twisted into spirals, in black, blue, green, brown, or red. Occasionally the beads are further embellished with spots, circles, or equatorial bands. The designs are made by funneling contrasting colors of powdered glass into the mold or inserting pre-formed glass elements.