Princess-cut diamonds are also known as square-modified brilliant cuts. This exclusive cut was designed to flaunt the unique sparkle of the diamond, providing a shine similar to round-cut diamonds due to its similar facet location. Princess-cut diamonds are one of the most popular shapes for engagement rings. These princess-cut man-made diamonds have a square shape, but when turned upside down, they resemble pyramids. Just like round cuts, they use a large amount of surface space of the rough diamond so very little is wasted of the precious stone. A lab-engineered princess-cut diamond makes a bold statement as it is modern and geometric.