Carbonado, a form of carbon resembling hematite, but akin to the diamond, used like black diamonds in Boring (q.v.).
Carbonado
Chambers's Encyclopaedia, Volume 2: Beaugency to Cataract, p. 755
Source scan(s): p. 0772
Carbonado, a form of carbon resembling hematite, but akin to the diamond, used like black diamonds in Boring (q.v.).