any
diamond; and therefore must be of great service towards forming a right
notion oi their value, as it is well known that some rough diamonds
must sustain a much greater loss or diminution of weight than others,
arising from their peculiar shapes. And to form a true judgment of the
value of any rough diamond, the price or value of one of a carat
weight, similar to the stone which is to be purchased, determines its
value, as in the case of manufactured diamonds. But as it is more
difficult to judg-e what a rough
diamond
will prove when cut, than to judge of one manufactured, the buyer,
supposing him a merchant, must act with proper precaution, and make
sufficient allowance to himself, for the uncertainty of the stone
answering expectation when wrought. And, if it be a stone of a
considerable value, he must allow himself also for the interest of the
money he lays out, according to the time he supposes the stone may
remain unsold. These precautions are the only means of guarding against
the hazards and disadvantages that attend dealing in large rough
diamonds ; and, by such a conduct, dealers