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What is a cut in a diamond?

The cut of a diamond refers to the way it has been shaped and the quality of the cut. It is one of the most important factors to consider when buying a diamond as it affects how well the diamond sparkles and reflects light.

A well-cut diamond will have its facets (the flat, polished surfaces on the diamond) positioned in a way that allows the maximum amount of light to enter the diamond, bounce off the internal surfaces, and then return to the viewer's eye as a sparkling rainbow of colors.

How is the quality of the cut determined

The quality of the cut is determined by three factors:

1. Proportions:

This refers to the size and angle of each facet on the diamond. The ideal cut diamond has a specific set of proportions that allow for the maximum amount of light to be reflected back to the viewer's eye. If the proportions are too shallow or too deep, the light will not reflect as well, and the diamond will appear dull.

2. Symmetry:

This refers to the precise alignment of the facets on the diamond. A diamond with excellent symmetry will have all of its facets lined up perfectly, resulting in a symmetrical and visually appealing appearance.

3. Polish:

This refers to the smoothness of the diamond's surface. A diamond with excellent polish will have no visible blemishes or scratches on the surface, which can affect how well it reflects light.

Types of Diamond Cuts

How is the cut graded?

The cut of a diamond is usually graded on a scale of excellent, very good, good, fair, and poor. An excellent cut diamond will have the maximum amount of brilliance, fire, and sparkle, while a poor cut diamond will appear dull and lifeless.

It's important to note that the cut of a diamond is different from its shape. While the shape of a diamond refers to its physical appearance, such as round, princess, or oval, the cut refers to the quality of the diamond's angles, proportions, symmetry, and polish.

Cut Grading