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 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