The way a diamond has been cut indicates its physical shape. The cut of a diamond is the only one of the 4Cs that is not determined by nature. The intricate operation of transforming a rough stone to a uniquely cut and polished diamond is a lengthy and challenging process. Each stone has to be examined thoroughly before a skilled polisher can release the diamond’s full brilliance. Based on scientific formulas, a premium cut diamond will internally reflect light from one facet to another. A premium cut diamond will always have more sparkle than others. Diamonds that are cut either too deep or too shallow can lose light through the sides and bottom and will be less brilliant and ultimately of less value.Each stone loses, on average, more than half of its original weight during cutting and polishing. A typical Round Brilliant diamond has 58 facets. Polishers adhere to specific formats to bring out the best for the diamond. (See below)
Cut also refers to the shape of a diamond whether it be round, heart, square, pear, etc. Below are examples of different diamond shaped cuts.
The most brilliant diamonds are going to be round in shape as this relates to the symmetry and capability of the diamond to reflect nearly all the light that enters it. No round diamonds are referred to as “fancy shapes”, they have their own individual guidelines to consider for being considered well cut.
The choice of preferred colour is purely down to personal taste and budget requirements.
Coloured diamonds are referred to as ‘Fancy Colour’ diamonds and they come in a variety of colours such as pink, red, blue, green, yellow etc. These are diamonds that have gone beyond Z in the diamond whiteness alphabet, tipping the scale and in doing so entering a league of their own as rare fancy coloured diamonds. Very few coloured diamonds are of exceptional colour quality; those that are, are in a very high demand and considered seriously valuable.