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 Black's choreography as "racy," later complimenting Porcelain Black on her "two-toned, Cruella De Vil-inspired coiffure." Porcelain Black walked down the runway in a camouflage corset designed by Falguni and Shane Peacock at the 2012 Spring Fashion Week, as her song played in the background. Her appearance there was used to promote the single. "This Is What Rock n' Roll Looks Like" appeared in the tenth episode of the eighth season of Beavis and Butthead. Expecting the duo to comment on the disparity between the song's title and its genre, R.L. Shaffer of "IGN" noticed that no such comparison was made;