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 the poverty line, including 2.9% of those under age 18 and none of those age 65 or over. Frank Robinson, founder and CEO of Robinson Helicopters was born in Carbonado in 1930. Carbonado School District is a historical school district which started in 1887. Paul Strand, pitcher (6-2), World Champion Boston Braves, born in Carbonado, 1893. Carbonado, Washington Carbonado is a town in Pierce County, Washington, United States. Carbonado is located near the Carbon River in northern Pierce County, approximately 50 miles (80 km) southeast of Seattle. Carbonado is the last town before entering Mount Rainier National Park and is