Diamonds - Cut

Although clarity and colour add to the value of a diamond, it's the diamond's cut that contributes the most to a diamond's beauty. If a diamond is cut too deep or too shallow, the light that enters the stone will leak out the bottom of the diamond thereby losing the diamond's brilliance. When a diamond is cut proportionally, the light that enters the stone is able to reflect internally from facet to facet and then back to the eye. This play of light creates the scintillation and fire that gives a diamond it's beauty.