Cushion cut diamonds have a rectangular or square shape but are different from princess cut diamonds as they have rounded corners. This lab engineered cushion diamond shape is popular for its enticing vintage charm. These cushion diamond cuts have bigger surface area and allow more light to come in, giving it a much more lustre.The facet of this cushion cut is shaped and arranged such that it enhances the brilliance of the diamond. These man-made cushions cut diamonds are less expensive as compared to round cut diamonds.