While commonly interpreted as the particular shape of a diamond, a diamond’s cut is actually the factor that determines the brilliance, fire and sparkle that result from the light return of a faceted diamond.
Diamond cutting is an extremely precision oriented craft that makes slight changes in angle and depth of each facet in order to reveal the highest levels of brilliance and sparkle from a particular diamond.
As one of the hardest factors to quantify, cut is often overlooked although it has a large effect on value due to its ability to create life from within a diamond or to inversely leave a diamond dull and unattractive.
The proportions of a diamond combine to affect the levels of brilliance, or light reflected from the diamond, scintillation or sparkle when the diamond is moved in direct light, and fire or dispersion of light into the colors of the rainbow. The various combinations of proportions can lend to a move lively diamond and therefore lead to a higher value for that particular diamond in relation to one of the same cart, color and clarity that may be less lively.