black diamond

== English == === Noun === black diamond (countable and uncountable, plural black diamonds) Hematite. Anthracite. Carbonado, a natural diamond that is black in color. A black synthetic diamond, specifically a CVD polycrystalline diamond or HPHT polycrystalline compact diamond. Boron carbide. (South Africa, derogatory) A member of the new affluent black middle class in South Africa, characterized by conspicuous consumption. (skiing) A symbol representing a steep and relatively difficult trail, typically of a 40% gradient or above. ==== Coordinate terms ==== (skiing): green circle blue square bunny hill ==== Derived terms ==== (skiing): double black diamond ==== Translations ==== ==== See also ==== ♦ (Unicode black diamond)