The princess cut diamond is the second most popular diamond in the market after the round brilliant comes in square shape. They have as much brilliance as the brilliant round diamond that’s why sometimes refers to brilliant princess diamond because its facets are arranged in a similar manner to round diamonds for maximum sparkle.
The corners of the square shape diamond are 90-degree points. Princess cut shape is not graded by GIA but do have polishing and symmetry. Though it is much newer than brilliant round, it is highly revered cut for Engagement Ring. Princess cuts ideally in square shape but can be found in rectangle silhouettes.