Cushion cut Round Brilliant diamonds share many of the same characteristics, particularly because they both feature brilliant cut facets. But a Cushion’s shape is slightly squared, whereas a Round Brilliant diamond is perfectly round. A Cushion cut diamond has a larger table, but they don’t necessarily appear larger than a Round Brilliant of the same carat weight. Their depth “hides” some of their carat weight, making them sometimes appear slightly smaller. Additionally, some perceive Round Brilliants as larger because of their brilliance.
In short, both diamond shapes are timelessly elegant, but a Round Brilliant is ideal for classic styles while a Cushion might be better suited for those wanting to buy an engagement ring that is vintage-inspired.