Diamond Cut
Cut or make is regarded as the most important of the “4 C’s”. At the IGI, two aspects of the cut are judged separately, the finish grade and the proportions. In examining the finish grade, attention is paid mainly to any symmetry deviations and facets.
The proportions which is the relationship between the various parts of the stone, determine the brilliance of the diamond (brightness). The main symmetry deviations are at first judged on the objective measured data. A Sarin system is used for this system. The results are then checked by a visual examination with a loupe.
Some common diamond shapes are round, princess, marquise, pear, emerald, oval and the heart.
At this point, it is important to note that a diamond's shape is not the same as its cut. Cut is the reference to a diamond's reflective qualities. The shape refers to the general outward appearan
A good cut gives a diamond its brilliance and fire. The angles and finish of a diamond are what determine its ability to handle light. Therefore, a well cut loose diamond exudes the most brilliance whereas a shallow diamond or a “too deep” diamond exude poor brilliance.
