A diamonds cut is undeniably the most important of the 4 C’s. Even with close to perfect colour, size and clarity if a diamonds cut is not in correct proportions all other characteristics will not be as highly valued. The way in which a diamond is cut will determine how the diamond reflects light and hence determine its brilliance or sparkle. A poorly cut diamond will appear lifeless and dull.
Diamonds reflect their light from one facet to the other. If the cut of the diamond is too deep then light will escape through the opposite side of the pavilion. On the other hand if the cut is too shallow then light will escape through the pavilion before it can be reflected.
The other consideration which requires some thought is the shape of the diamonds cut. This will come down to personal taste, just be sure that the diamond has a good to excellent cut. The properties of a diamond can be examined by a reputable diamond laboratory although once a diamond has been placed into a setting then this is no longer possible.
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