Cut

The cut of a diamond describes the technique in which a diamond has been shaped and polished from its beginning form as a rough stone to its final proportions. Diamonds with a high cut grade will have a high degree of brightness and sparkle.
There are mathematical guidelines for the angles and length ratios at which the diamond should be cut in order to reflect the maximum amount of light. Round brilliant diamonds, the most common, are guided by these specific guidelines, though fancy cut stones are not able to be as accurately guided by mathematical specifics.

The most frequent mistakes in cut are; an incorrect number of facets, excessive weight (it is easy to mistakenly believe that the number of carats is the most important aspect to a diamonds value, one common mistake is to leave too thick a girdle. This gives the diamond a higher price however it also diminishes the brilliance and beauty). The ‘nail head’ effect. This is caused when a diamond is cut too deep, if you look at the stone from the top a dark nail head may appear in the centre of the stone. The ‘large angle’ effect. When a diamond is given a flat cut and the table is too large, the stone is dulled. Even worse, it produces an unattractive large angle effect across the crown.

At Orsini’s we believe that the cut is crucial as this is where the beauty and brilliance of a diamond is reflected. Diamonds should always be ‘cut for beauty not weight’.