Zebra Stone is a rare marble found in Indonesia and few other parts of the world. The black, sometimes greenish, component is very hard while the white is very soft making it hard to work. Farther the sizes of the mined blocks are very small making it not ideal for large application. Oriental Civilizations believed the power of this stone gave man a superior intellectual capacity.
Chemically speaking being a marble it is a Calcium Carbonate (the white portion) with a high percentage of carbon and other impurities imbedded into it (the stripes).