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
Now That's What I Call Classic Rock Hits Now That's What I Call Classic Rock Hits Now That's What I Call Classic Rock Hits is one of many genre-themed compilation albums from the "Now!" series in the United States, this one focusing on popular classic rock songs from the 1970s. It was released on May 1, 2012. In his review for Allmusic, Gregory Heaney says "the Now series delivers a dose of good ol' classic rock with "Now That's What I Call Classic Rock Hits"," which "gathers some of rock's most enduring crossover hits." "Now That's What I Call Classic Rock Hits" is "an album that achieves its