PS refers to princess square cut corundum, a modern style with beveled corners. This square modification reduces waste over traditional emerald cuts. The cropped corners create the illusion of greater size. PS enhances corundum's brilliance with its pleasing geometry. The straight lines and pointed corners have an appealing symmetry. As a contemporary cut, princess shapes show off corundum as a fashionable center stone or bold accent. Sapphires and rubies glow brightly within the orderly square outline. PS cutting allows the flawless clarity and vibrant hues of corundum to take the spotlight.