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 This Is What Rock n' Roll Looks Like "This Is What Rock n' Roll Looks Like" is the debut single of American industrial singer-songwriter Porcelain Black, featuring American rapper Lil Wayne. This song serves as the lead single from the singer's debut studio album, "Mannequin Factory". Produced by Moroccan-Swedish producer RedOne, who had originally discovered Black, "This Is What Rock n' Roll Looks Like" is influenced by the genre of rock, lyrically stating how the listener should be proud of who they are. The song was released digitally in the United States on March 29, 2011, and managed to chart