Among the 4Cs of diamond cut, clarity, colour and carat weight, the quality of a diamond’s cut is the only attribute that is totally dependent on the skill of a human being—the diamond cutter. And what most people do not realize or often overlook is that cut affects so much more than the shape of a diamond.
A master cutter extracts the greatest beauty from a diamond by capturing the light entering the stone and reflecting it, creating a bouncing effect. An expert cutter will consider the proportions of the top flat facet (the thin perimeter of a diamond, dividing the crown above from the pavilion below), the top or crown, the girdle (the line around the middle of the stone), and the underside (pavilion or base) to determine the optimal composition with respect to light. A properly cut diamond draws light that is reflected from one facet to another and dispersed through the top of the stone.