are four main factors which determine the value of the
They are: Size (Carat weight), Cut, Color and Clarity.
They are often referred to as the "Four C's".
diamond'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.