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
Rock Island 886 Rock Island 886 Chicago, Rock Island & Pacific 886 is a 4-6-2 Pacific type steam locomotive built in 1910 by the American Locomotive Company for the Rock Island Railroad. The locomotive's real number is 887. It was renumbered 886 in July 1955 when donated for display. The real 886 was already scrapped when the city of Peoria asked the Rock Island to donate the 886 for display since it was the last steam locomotive to operate out of Peoria. What happened in the end was that the Rock Island offered 887, an identical model to the 886, to be renumbered