Also known as African Ebony, Nigerian Ebony, or Cameroon Ebony, this species of ebony is among the most expensive of all available lumbers. It has heartwood that is usually jet-black, with little to no variation or visible grain. Occasionally, dark brown or grayish-brown streaks may be present. This species is extremely hard on tools. Grain is usually straight but can also be interlocked with fine even texture with very high natural luster.