DIAMONDS AND PEARLS. 45
understood, that method will be made use of on this occasion.
is to be known by applying the price they bear manufactured, which has
been shown, viz. that as rough diamonds are va-lued at two pounds per
carat, a wrought diamond of one carat is worth eight pounds ; so to
find the value of a stone of that degree of goodness, whatever number
of carats are contained in such a diamond, each is to be valued at
eight pounds ; and whatever sum they make, must be multiplied by the
weight of the diamond.
The instances are as follow :
find the value of such a diamond of five carats weight, reckon every
carat at 8 pounds ; then multiply 5 carats by 8 pounds, that makes 40
pounds ; so every carat is to be valued at 40 pounds; then multiply 5
by 40, that produces 200l. and is the value of such a diamond.