Princess Cut Diamond
Its pyramidal shape with four bevelled sides creates more light dispersion than any other square shaped diamond, making it popular for both solitaire engagement rings and earrings.
As it is a patented cut, it may be referred to as a Square Modified Brilliant on a laboratory certificate (eg. GIA or AGS), or a Rectangular Modified Brilliant if it has a ratio greater than 1.05.
When purchasing a princess diamond ring, it may be helpful to remember that you should avoid diamonds with a higher table percentage than depth percentage. The table is the uppermost surface of the diamond that runs flat across the top, parallel to the girdle. The depth, on the other hand, is the distance between the lowest and highest part of the diamond. A princess diamond ring can have more of a square or rectangular shape, and the style that you choose depends entirely on your preference.