Diamond Cut doesn’t refer to its shape (e.g. round, oval, marquise, pear, etc.). Instead, this parameter refers to how well a diamond is cut and polished as well as taking into account its depth, symmetry, and proportions. Cut quality is considered to be the most important of the 6 C’s as this will have a direct impact on the diamond’s brilliance and beauty.
In general, poorly cut diamonds look dull while well cut ones are brilliant. Diamond Cut greatly affects your diamond’s appeal, beauty, and value. IGL examines your diamond’s cut using the latest instruments and software to give you a detailed picture of its quality.
The main factors that affect Diamond Cut are:
| Diamond Cut Rating | Description |
|---|---|
| Excellent | The best quality diamonds are Excellent Cut. This means that almost all of the incoming light is reflected by the diamond, giving it a one-of-a-kind brilliance. |
| Very Good | Most of the light entering the diamond is reflected. To the untrained eye, Very Good Cut Diamonds have the same sparkle and brilliance as Excellent Cut Diamonds. |
| Good | Good Cut Diamonds offers the perfect balance between beauty and price. |
| Fair | These diamonds have little brilliance. Fair Cut Diamonds are ideal as side stones. |
| Poor | These diamonds don’t have any brilliance or shine. |
IGL determines a diamond’s Cut Grading using the best equipment in the market. The Sarin DiaMensionTM is used by the world’s leading gemmological laboratories. It’s fast, efficient, and effective in grading thousands of diamonds a day. The Sarin Diascan is the perfect instrument for demonstrating the difference between cut qualities.
Proportion grading is done using a computerized interface that makes it easy to get accurate measurements of all the angles and facets of your diamond. Our system can also generate 3D images of your stone including how it looks under optimal light conditions.
IGL also uses the Cut Grade Analyzer software which helps evaluate the brilliance, fire, and scintillation of your diamond.
Australia’s Premier Diamond Certification