The new planet is far denser than any other known so far and consists largely of carbon. Because it is so dense, scientists calculate the carbon must be crystalline, so a large part of this strange world will effectively be diamond.
source http://www.reuters.com/article/2011/08/25/us-planet-diamond-idUSTRE77O69A20110825
source http://www.reuters.com/article/2011/08/25/us-planet-diamond-idUSTRE77O69A20110825






