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
Now That's What I Call Rock Now That's What I Call Rock Now That's What I Call Rock is a compilation album released on January 22, 2016, by the distributors of the popular "Now That's What I Call Music" series in the United States. The collection brings together a diverse group of artists from a range of styles such as "EDM textures, summer festival blues-rock chug, arena alternative, post-Tool hard rock, triumphant psych-pop and cosmopolitan retro experiments." Despite the popularity of the "Now" albums, rock compilations have been an area of neglect by record companies. To reach out to a broad audience, the first rock volume