Meanings (ES + gloss)
carbonado
A dark, non-transparent, impure form of polycrystalline diamond (also containing graphite and amorphous carbon) used in drilling.
At present, equal attention is paid to irregular fragments of a blackish or greyish colour, occasionally of considerable size, also yielded by the washings of diamandiferous sand,…
Brazil's carbonadoes are indispensable today for the speedy cutting of hard rubber, bakelite and fiber compounds. Their absolute precision is especially valuable in turning such in…
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