Black diamond
From WebRef.org
Jump to navigationJump to search - A variety of crystalline carbon, related to diamond, but showing no crystal form. Highly prized as an abrasive because of its hardness. Occurs only in Brazil. Syn: carbonado
- A term frequently applied to coal.
- A black gem diamond.
- Dense black hematite that takes a polish like metal.
Source: Dictionary of Mining, Mineral, and Related Terms
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