Below are possible answers for the crossword clue Diamond, essentially.
6 letter answer(s) to diamond, essentially
CARBON
a copy made with carbon paper
a thin paper coated on one side with a dark waxy substance (often containing carbon); used to transfer characters from the original to an under sheet of paper
Carbon - an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds
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