See also:

• BORT, or BOART

BORT, or BOART  , an inferior See also:

• KIND (O. E. ge-cynde, from the same root as is seen in " kin," supra)

kind of See also:

• DIAMOND

diamond, unfit for cutting but useful as an abrasive See also:

• AGENT (from Lat. agere, to act)

agent . The typical See also:

• BORT, or BOART

bort occurs in small spherical masses, of greyish See also:

• COLOUR (Lat. color, connected with celare, to hide, the root meaning, therefore, being that of a covering)

colour, rough or drusy on the See also:

• SURFACE

surface, and showing on fracture a radiate crystalline structure . These masses, known in See also:

• BRAZIL
• BRAZIL, or BRASIL

Brazil as See also:

• BOLAS (plural of Span. bola, ball)

bolas, are often called "shot bort" or "See also:

• ROUND (O. Fr. rond, Lat. rotundus, the Fr. is the source also of Du. rond; Ger., Swed., Dan. and Nor. rond)

round bort." Much of the bort consists of irregular aggregates of imperfect crystals . In See also:

• TRADE (O. Eng. trod, footstep, from tredan, to tread; in M. Eng. the forms teed, trod and trade appear, the last in the sense of a beaten track)
• TRADE, BOARD OF

trade, the See also:

• TERM

term bort is extended to all small and impure diamonds, and crystalline fragments of diamond, useless as See also:

• GEM (Lat. gemma, a bud,—from the root gen, meaning " to produce,"—or precious stone; in the latter sense the Greek term is > d>os)
• GEM, ARTIFICIAL

gem-stones . A large proportion of the output of some of the See also:

• SOUTH
• SOUTH, ROBERT (1634–1716)

South See also:

• AFRICAN

African mines consists of such material . This bort is crushed in See also:

• STEEL, FLORA ANNIE (1847– )

steel mortars to See also:

• FORM (Lat. forma)

form diamond See also:

• POWDER (through O. Fr. puldre, modern poudre, from Lat. pulvis, pulveris, dust)

powder, which is largely used in lapidaries' See also:

• WORK

work .