Material properties of diamond these are known as ballas and are important to industry as they lack the cleavage planes of single-crystal diamond. Carbonado is a similar opaque microcrystalline form which occurs in shapeless masses. Like ballas diamond, carbonado lacks cleavage planes and its specific gravity varies widely from 2.9 to 3.5. Bort diamonds, found in Brazil, Venezuela, and Guyana, are the most common type of industrial-grade diamond. They are also polycrystalline and often poorly crystallized; they are translucent and cleave easily. Because of its great hardness and strong molecular bonding, a cut diamond's facets and facet edges appear the flattest and sharpest. A
This Is What Rock n' Roll Looks Like by Porcelain Black's image and sounds but favored her apparent perception of herself as the "offspring" of fellow musicians Britney Spears and Marilyn Manson and their individual styles. Porcelain Black performed the song on the "Late Show with David Letterman", marking her debut televised appearance. The song was featured in an episode of Beavis and Butthead and the 2013 film, "The Smurfs 2". "This Is What Rock n' Roll Looks Like" was written by Porcelain Black, Lil Wayne, RedOne, Bilal Hajji, with RedOne providing the song's production. In the song's writing credits, Porcelain Black and Lil Wayne are credited under