Sentence Examples with the word Bort

Both bort and carbonado seem to be really aggregates of crystallized diamond, but the carbonado is so nearly structureless that it was till recently regarded as an amorphous modification of carbon.

The employment of powdered bort and the lapidary's wheel for faceting diamonds was introduced by L.

PIERRE EDMOND TEISSERENC DE BORT (1814-1892), French writer and politician, was born at Chateauroux on the 17th of September 1814, and entered the civil service after the completion of his education at the Ecole Polytechnique.

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For rock drills, and revolving saws for stone cutting, either diamond, bort or carbonado is employed, set in steel tubes, disks or bands.