A Princess Cut diamond is easy to spot by its pyramidal shape and four beveled sides. Of all the square-cut gemstones, this cut is the one with the most brilliance thanks to the 57 or 76 facets. The more facets, the higher the brilliance. This cut was first invented by Betazel Ambar and Israel Itzkowitz in 1980 and was called the “Profile Cut,” taking inspiration from the French Cut and Quadrillion Cut.
The Princess Cut is a guaranteed eye-catcher thanks to the facet patterns. The crown, or upper part of the diamond, is cut in one of two ways:
A bezel cut, which is a facet cut from the table (the very top, flat part you see) over to the girdle (the outermost part as you look down on a diamond). The diamond cutter will choose between two, three, or four chevron patterns…each of which create a unique effect. With two you’ll get a large sparkle. Three is a nice balance between brilliance and dispersion (the “fire” or “rainbow” effect coming off the diamond). With four chevron patterns, you get a magical “crushed ice” effect.
A French Corner cut, which is when the facets cut on the table point toward the corners of the diamond.
When looking at ratios, the optimum number is typically between 1.00 and 1.05
The Princess Cut is the second most popular cut and examples can be seen here: