Cut refers to the angles and proportions of a diamond. The quality of the cut determines a diamond's brilliance. It is the skill of a master cutter that unlocks the natural beauty, which reveals the stone's true brilliance, fire and ultimate beauty.
A diamond that is cut will internally reflect light from one facet to another it disperses, and reflects it through the top of the diamond. This results in a display of brilliance and fire, which encaptures the eye of a discerning diamond lover. Thus placing well-cut diamonds higher than deep or shallow-cut diamonds. Diamonds that are cut too deep or too shallow lose or leak light through the side or bottom, resulting in less brilliance and ultimately value.