Carbonado typical gem diamonds. Lead isotope analyses have been interpreted as documenting crystallization of carbonados about 3 billion years ago. The carbonados are found in younger sedimentary rocks. Mineral grains included within diamonds have been studied extensively for clues to diamond origin. Some typical diamonds contain inclusions of common mantle minerals such as pyrope and forsterite, but such mantle minerals have not been observed in carbonado. In contrast, some carbonados do contain inclusions of minerals characteristic of the Earth's crust: these inclusions do not necessarily establish formation of the diamonds in the crust, however, because while these obvious crystal inclusions occur
This Is What Rock n' Roll Looks Like their real names, Alaina Beaton and Dwayne Carter, Jr. respectively. After being introduced to Lil Wayne's manager, Derrick "EI" Lawrence, by producer RedOne, Porcelain Black stated that she met Lil Wayne in New York City when he heard "This Is What Rock n' Roll Looks Like", where he expressed an interest in adding his vocals to the song. The single cover for "This Is What Rock n' Roll Looks Like" was revealed on March 21, 2011, alongside a snippet of the song. "This Is What Rock n' Roll Looks Like" was released digitally through the United States iTunes Store on