Material properties of diamond to a very large kinetic energy barrier, diamonds are metastable; they will not decay into graphite under normal conditions. Material properties of diamond Diamond is the allotrope of carbon in which the carbon atoms are arranged in the specific type of cubic lattice called diamond cubic. Diamond is an optically isotropic crystal that is transparent to opaque. Diamond is the hardest naturally occurring material known. Yet, due to important structural weaknesses, diamond's toughness is only fair to good. The precise tensile strength of diamond is unknown, however strength up to 60 GPa has been observed, and it could be as
Klopman diamond Klopman Diamond also appeared in a "Screaming with Binky" short, in which Binky the Clown inadvertently caused a diamond cutter to shatter the Klopman Diamond into a small pile of dust. Mark Evanier claims credit for adding references to the Klopman diamond to "Garfield and Friends". As a nod to the old animated series, the more recent series "The Garfield Show" (also written by Evanier) has also included references to the Klopman Diamond, and a crystal referred to as the Klopman Crystal is made a plot device in the direct-to-video film "Garfield's Pet Force". There is also a reference to