Carbonado in the pores that are common in carbonados, they may have been introduced after carbonado formation. Inclusions of other minerals, rare or nearly absent in the Earth's crust, are found at least partly incorporated in diamond, not just in pores: among such other minerals are those with compositions of Si, SiC, and Fe‑Ni. No distinctive high-pressure minerals, including the hexagonal carbon polymorph, lonsdaleite, have been found as inclusions in carbonados, although such inclusions might be expected if carbonados formed by meteorite impact. Isotope studies have yielded further clues to carbonado origin. The carbon isotope value is very low (little carbon‑13
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;