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What to Look for in the Cut of a Diamond

by Craig

When it comes to the four Cs of diamond buying (cut, color, clarity, and carat), most people seem to feel that size is the most important aspect of the selection process. However, it is the cut of the diamond that can have an effect on each of the other points of consideration. For example, a large table (the flat surface on top of the stone) can showcase even the most minute inclusions. And that’s just one way the cut is important to the overall quality of the stone. So before you settle on a diamond, think about how different cuts can affect the overall purchase.

The first thing to know is that there are various facets of a stone that will differ from cut to cut. The portions of a diamond that are important are the table, the crown (the height of the top portion of the diamond), and the pavilion (the depth of the bottom portion of the stone). The girdle (where the crown and pavilion meet) and the cutlet (the small surface on the very bottom of the stone) also play a role in both the brilliance and overall quality of the stone, but they’re not as important (unless they are badly bungled). The exact measurements of these portions of the stone are going to determine whether or not it sparkles, displays flaws, exhibits color, and so on, so you need to consider which cuts emphasize different traits.

An emerald-cut diamond, for example, tends to have the largest table, meaning it requires an exceptionally flawless stone to pull off. The same goes for an asscher cut. If the clarity or color is off, it will be more pronounced in these cuts. Round cuts, on the other hand, tend to exhibit the most brilliance, but this can be reduced if the stone is cut too shallow (as in, a small pavilion depth). Pear- and heart-shaped diamonds, while unique, may reflect light strangely because they are not entirely symmetrical. And cushion, oval, and marquise cuts simply aren’t very deep, but they tend to be less expensive because they contain fewer carats.

So regardless of the cut you choose, it will have an impact on the beauty of your stone. That doesn’t necessarily mean you should discount certain cuts because of the potential for problems, it just signifies a need to take care when choosing the cut of your stone. Just be sure to look for any flaws that may be more apparent due to a particular shape.

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