Carbonado Carbonado Carbonado, commonly known as the "black diamond", is the toughest form of natural diamond. It is an impure form of polycrystalline diamond consisting of diamond, graphite, and amorphous carbon. It is found primarily in alluvial deposits in the Central African Republic and in Brazil. Its natural colour is black or dark grey, and it is more porous than other diamonds. Carbonado diamonds are typically pea-sized or larger porous aggregates of many tiny black crystals. The most characteristic carbonados have been found only in the Central African Republic and in Brazil, in neither place associated with kimberlite, the source of
Carbonado, Washington settled during an economic boom in the region. The boom was brought on by raw material demands in nearby growing towns such as Seattle and Tacoma. Starting with the town of Burnett and moving on through Wilkeson, Carbonado, Montezuma, Fairfax, and finally Manley Moore, these settlements sprawled up the valley to the very boundary of Mount Rainier National Park. Most of these towns were company towns, meaning that they specialized in the harvest of raw materials owned the plot of land that the town was situated on and that the resources were harvested from. Often—and such was the case of