Diamonds' cut are usually determined by the original shape of the original diamonds. Most gemologists will try to cut the diamonds based on the original cut of the diamonds and location of any inclusions, if any. The gemologists will consider these factors before they begin the process of shaping the diamonds.
They will try to cut the diamonds to the best advantage of the diamonds, for instance, cutting the diamonds in a way that the inclusions or flaws are strategically positioned, like near the girdle or the culet.
This is because when these flaws are located near the girdle or culet, when consumers purchase the loose stones and have the diamonds set in a prong, the clasps of the prongs will hide the flaws, making them not visible.
Diamonds with serious flaws that are located near the girdle or the culet tend to cost less even though when the stones are eventually mounted on the prongs, they are not noticeable.
The most popular cut is still considered the Brilliant Round cut. Why is this so popular?
The modern round cut diamonds consists of 58 facets or 57 if the culet is excluded; 33 on the crown and 25 on the pavilion. The girdle may be frosted, polished smooth or faceted.
While the round brilliant cut is considered standard for diamond, with its shape and proportions nearly constant, the choice of fancy cut is influenced heavily by fashion. For example, the baguette cut which accentuates a diamond's luster, whiteness, and clarity but downplays its fire was highly popular during the Art Deco period, whereas the Princess cut which accentuates a diamond's fire and brilliance rather than its luster is currently gaining popularity.
The princess cut is also popular amongst diamond cutters: of all the cuts, it wastes the least of the original crystal. Then there are other fancy cuts such as the Asscher, Cushion, Oval, Marquise, Emerald, Pear, and Heart.
The most popular cut for diamonds however still remain to be the Round Brilliant Cut and the Princess Cut. The brilliant round cut diamonds are the top diamond seller, followed by the princess cut.
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