The Cut is man’s contribution and brings life to the diamond crystal. The cut and polish are crucial to creating the diamond’s brilliance. The precision of the cut commands the maximum amount of light the diamond will reflect. A D-color, flawless diamond that is cut poorly will not be as brilliant as a G-color SI1 clarity diamond that was cut to ideal proportions. If the diamond is cut too shallow or too deep it will allow light to escape through the sides or the bottom of the stone, rather than reflecting it back to the eye. A well-cut diamond has superior brilliance because more light is being directed up through the crown.