Introducing the African Blackwood Traveller (7mm) : The ideal size for carrying in the pocket, everyday use and for travelling. . Strung in the traditional Ottoman style with 99 beads. African Blackwood, the ancient Egyptian Ebony has subtle hints of purple and brown beneath the black patina. This wood takes an amazing polish which increases with use. Beads measure approximately 7 x 7mm. Strung with 99 beads in the Ottoman style.