Carbonado compared to carbon‑12, relative to typical diamonds). Carbonado exhibits strong luminescence (photoluminescence and cathodoluminescence) induced by nitrogen and by vacancies existing in the crystal lattice. Luminescence halos are present around radioactive inclusions, and it is suggested that the radiation damage occurred after formation of the carbonados, an observation perhaps pertinent to the radiation hypothesis listed below. The origin of carbonado is controversial. Some proposed hypotheses are as follows: None of these hypotheses for carbonado formation had come into wide acceptance in the scientific literature by 2008. Supporters of an extraterrestrial origin of carbonados propose that their material source was a
What It Is to Burn album turned out to be a bit of a disappoinment due to the large amount of hype surrounding the release, giving it an overall 3 stars. "What It Is to Burn" charted at number 99 on the "Billboard" 200 and number 1 on the Heatseekers Albums charts. It also charted at number 177 in the UK. "Letters to You" charted in the UK at number 39. "What It Is to Burn" charted at number 15 on the Alternative Songs chart and number 35 on the Mainstream Rock chart. By April 2003, the album had sold over 200,000 copies in the