Princess shape is one of the relatively new forms of polishing that was invented in the it was invented only in the sixties, is now one of the most popular touches, second only to polishing the brilliant round. In fact, princess cut diamonds have the same brilliance as round diamonds, and are sometimes referred to as “square modified brilliants”.
For the most part, it is believed that the inventor of the princess’s polishing is the London jeweler Arpad Nagy, although the polishing he developed is now called “profile polishing,” and princess polishing has become a general name for the brilliance of square diamonds.
The princess is decorated with a square or rectangular top, with pointed corners and beveled sides. The number of facets varies between 49 and 78, depending on the size and shape of the stone. For now, there is no consensus among the diamond industry as to which type of facets and what proportions are the princess’s “ideal” polish. Diamond princess polishing can be found in relation to length-width proportions of 1.0 to 1.05 – square perfectly or almost perfect, 1.1 – slightly elongated, 1.2 – wide rectangle. The depth rate can range from 70% to 78%.
This polishing is the most popular of the straight-edged edges and these diamonds are particularly sought in solitaire rings, especially engagement rings. Polishing a princess usually succeeds in preserving 30-40% more than the rough stone, compared to a diamond with a round polishing of similar weight. This makes them a little less expensive compared to round diamonds, because a smaller percentage of the diamond “goes down the drain” during polishing.
While some of the polishing is used for diamonds at all levels of cleanliness, princess’s diamonds are usually made with high purity diamonds, and this quality is maintained during the cutting and polishing process. Customers who are looking for a lower quality diamond will find it difficult to find a diamond like that for a princess.