Ebony (unicanaliculata) both the quaint stone and wood charm, ' Eastern sacred ' and ' plant Mummy ' said. By earthquake, flood, mud-rock flow buried the ground plant biomass, and all into ancient riverbeds and other low-lying. Buried in silt in parts of trees, hypoxia, high pressure conditions, under the action of microorganisms such as bacteria, formed over thousands of years of carbonization process of ebony, it is also known as ' carbonization wood '. Ages are used as symbols of ebony, making arts and crafts, Buddha amulet pendant. The ancients said: ' ebony half than treasure boxes '.