Symmetry

Symmetry is the arrangement of the facets and finished angles created by the diamond cutter. Excellent symmetry of a well-cut and well-proportioned diamond can have a great effect on the diamond’s brilliance and fire. Grading reports will often state the...

Step Cut

With rows of facets that resemble the steps of a staircase. The emerald cut and the baguette are examples of the step cut.

Scintillation

1. Sparkle: The appearance, or extent, of spots of light seen in a polished diamond when it is viewed face-up that flash as the diamond, observer, or light source moves. 2. Pattern: The relative size, arrangement, and contrast of bright and dark areas that result from...