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CUT EXPLANATION

Published: 29/11/2017

Cut – Explanation – Cut refers to the angles and proportions of a diamond, not the shape. It is the only one of the 4C’s that is influenced by the human hand. Diamond cutting requires great skill and training. The cutter must polish tiny surfaces known as facets onto the rough diamond. This process is what creates the facets known as the crown, culet, table, girdle and pavilion of the diamond.

To cut a diamond perfectly, a craftsman will often need to cut away more than 50% of the rough diamond. The better a diamond is cut, the more light it will reflect with the result that the diamond has more brilliance. This means that there are good and bad cuts in every shape.

As shown in the images below, when a diamond is well-cut, light enters through the table and travels to the pavilion where it reflects from one side to the other before reflecting back out of the diamond through the table and to the observer’s eye. This light is the brilliance we mentioned, and it’s this flashing, fiery effect that makes diamonds so mesmerizing.

In a poorly cut diamond, the light that enters through the table reaches the facets and then ‘leaks’ out from the sides or bottom of the diamond rather than reflecting back to the eye. Less light reflected back to the eye means less a brilliant and less valuable stone. A well-cut diamond are therefore higher in quality and value than deep or shallow-cut diamonds.

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