Carbonados - Heart In Diamond

Though most diamonds found on earth originate deep underground in super-heated, ultra-pressurized deposits of carbon; a mysterious form of diamonds known as carbonado diamonds are believed to have originated in outer space.   Carbonados, in contrast to the typical clear engagement ring diamonds we all know and love, are stark black.  They are extremely porous, and are even harder than regular diamonds.  Because of their unusual chemical makeup and the fact that they are only found in clusters centered around two specific locations on earth (Brazil and the Congo, to be exact,) scientists now hypothesize that these incredible diamonds came to earth in the midst of a meteor shower over a billion years ago.