A well cut diamond is the work of a master diamond cutter. When cut properly, the diamond is better able to handle light, creating more scintillation and sparkle. In a properly cut diamond, light is reflected from one facet to another and then dispersed through the top of the stone. If the cut of the diamond is too deep , some light escapes through the opposite side of the pavilion. If the cut is too shallow, light escapes through the pavilion before it can be reflected.