are four main factors which determine the value of the diamond.
They are: Size (Carat weight), Cut, Color and Clarity.
They are often referred to as the "Four C's".
weight is expressed in carats. Carat weight is the easiest of
the four C's to determine. To get the exact weight, however, the
diamond must be loose. One carat is divided into 100 "points"
so that a diamond of 50 points is described as a half carat in
size, or 0.50 carat. Within common weight ranges, there is little
or no variation in per-carat price.