carbonado


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carbonado:

see diamonddiamond,
mineral, one of two crystalline forms of the element carbon (see allotropy), the hardest natural substance known, used as a gem and in industry. Properties
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carbonado

[kär·bə′nā·dō]
(mineralogy)
A dark-colored, fine-grained diamond aggregate; valuable for toughness and absence of cleavage planes. Also known as black diamond; carbon diamond.
References in periodicals archive ?
POLLY GUNDRY continued her title chase when replacing Philip Pritchard, who had a damaged thumb, to win the restricted with Bill and Jill Tuck's Carbonado.
Wilkeson, Eatonville, Carbonado, Lakewood, Edgewood,
Later, two Pritchards, Julian on Cowanstown Prince and Dr Philip on Carbonado, indulged in a tremendous duel over the final fences in one of the young-horse maidens, with a worthy short-head victory going to the doctor.