Diamond Characteristics... IGL Four C's of a Diamond.
CUT
A diamond cut to proper proportion allows the greatest amount of light to be reflected, which gives you maximum brilliance. It's cut, polish, proportions and symmetry, are of utmost importance since these factors determine the life, brilliance and dispersion of the diamond. If these cutting factors fall below standard, the appearance of the diamond will be adversely affected.Below are the most common diamond shapes -
Color
Most diamonds of gem quality vary in shade from colourless to yellow.Clarity
Imperfections in a diamond are like fingerprints - no two are alike. The fewer imperfections in a diamond the better the diamond clarity. All "Eternal Diamond" diamonds are SI2 or better. In order to grade the clarity of a diamond, it is necessary to observe the number and nature of any internal characteristics in the stone as well as their size and position.
Carat Weight