|
|
|
|
|
|
|
|
|
|
DIAMONDS AND PEARLS. 97
carriage
of nature, or to age, to wear, or any other accident; when irregular in
their shapes, be they flat or hollow, craggy or gibbous ; when they are
stained with any colour, as yellow, blue, green, red, brown, or that
of a dusky iron. It is also an imperfection when they have large
drilled holes, or are rubbed flat about the edges of the holes by long
use. These defects cause a very considerable difference in the value of
pearls, of the same weight and size.
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Of the Rule of valuing Pearls.
. The only
rule of valuing them, is by the square of their weight, as in the case
of diamonds; nature producing them after the same manner, viz. a vast
number of small ones, and progressively a less number of larger, as
they increase in size and weight. Upon this principle two tables are
formed, of the prices of pearls. The first eight contain those of a
carat weight downwards, of eight different values, which will be found
in
|
|
|
|
|
|
|
|
|
|
|
