- Over Ons
The GIA Cut Grading System for the standard round brilliant diamond evaluates seven components.
The first three, brightness, fire, and scintillation, consider the diamond’s overall face-up appearance.
The remaining four, weight ratio, durability, polish, and symmetry, assess a diamond’s design and craftsmanship.
Brightness: Internal and external white light reflected from a diamond
Fire: The scattering of white light into all the colors of the rainbow
Scintillation: The sparkle a diamond produces, and the pattern of light and dark areas caused by reflections within the diamond.
The design and craftsmanship of the diamond considers weight ratio (weight of the diamond relative to its diameter), the diamond’s girdle thickness (which affects its durability), the symmetry of its facet arrangement, and