Diamond cubic strong isotropic property. Namely, for any two vertices "x" and "y" of the crystal net, and for any ordering of the edges adjacent to "x" and any ordering of the edges adjacent to "y", there is a net-preserving congruence taking "x" to "y" and each "x"-edge to the similarly ordered "y"-edge. Another (hypothetical) crystal with this property is the Laves graph (also called the K crystal, (10,3)-a, or the diamond twin). The compressive strength and hardness of diamond and various other materials, such as boron nitride, is attributed to the diamond cubic structure. Similarly truss systems that follow the diamond
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