Definition of carbonado in English:

carbonado

noun

  • A dark opaque diamond, used in abrasives and cutting tools.

    Also called black diamond
    • ‘Masses of carbonado up to 3,100 carats are reported from deposits near Lencois, Brazil.’
    • ‘Large Brazilian carbonados include the Carbonado Casco de Barro, Carbonado do Sergio, and Carbonado Xique-Xique.’
    • ‘The team has used this technique to characterize carbonados from the Central African Republic.’
    • ‘Heaney and Vicenzi both work with rare diamonds known as carbonados, which are found only in Brazil and central Africa.’
    • ‘Black or gray-black, massive, granular to compact bort is known as carbonado.’

Origin

Mid 19th century: from Portuguese.

Pronunciation:

carbonado

/ˌkɑːbəˈneɪdəʊ/