What defines a "cushion cut" diamond?

A cushion cut diamond is defined by its square or rectangular shape, combined with rounded corners and larger facets. This unique design allows for a softer appearance than a traditional square shape, which gives it the "cushion" name, reminiscent of a pillow. The larger facets of the cushion cut enhance the diamond's brilliance and fire, as they interact with light in an appealing way.

While other diamond shapes, like the round cut, triangular cut, and oval cut, bring their own distinct qualities and aesthetics, they do not encompass the specific characteristics that define a cushion cut diamond. The rounded corners and facet arrangement are what set the cushion cut apart from the others mentioned, contributing to its classic look and romantic appeal.