It is the precision and delicacy of the cut that dictates the maximum amount of light that will be reflected through the diamond.
- When a diamond is cut to good proportions light is reflected from one facet to another and then dispersed through the crown or the top of the stone.
- If the cut of the diamond is too deep some light escapes through the opposite of the pavilion or bottom.
- If the cut is too shallow light escapes through the pavilion or bottom before it can be reflected.
The different facets of a round brilliant cut diamond.