| Marketing
of Gemstones
The
15trained eye of a buyer must be able to spot
flaws that affect gem value and decide if they
can be eliminated by careful cutting. The size
of gem rough determines its value, so the buyer
must also be able to determine the sizes of the
gems that the rough will yield. The color of the
cut stones must be extrapolated from the appearance
of the rough. Obviously, errors in judgment can
be very costly at this stage, and some of the
cost of mistakes must be added to the eventual
price of the good gems that are recovered.
Gemstone deposits are sometimes profitably worked
by hand sort¬ing, whereas mechanized mining
would not be cost effective. Good examples. of
this are the opal fields of Australia and, when
active, the Burmese gravels. The slower hand methods
also insure that the gem deposits will yield their
treasures gradually, and thus be productive over
a longer period of time.
. 
Normally
gemstones from the mines are sold either to exporters
or to cutters. In recent years there has been
a trend in most gem-producing countries to cut
all fine gems locally.Rough or cut gems are exported
from the country of origin to importers in other
lands. The actual number of middlemen varies tre¬mendously.
Some companies travel the world buying gem rough
at the source, bring the rough back to their own
shops for cutting, and then sell the cut stones
at wholesale or retail. |