Cut is possibly the most important factor diamonds quality, because cut is what gives a diamond its brilliance. When we talk about cut, we mean much more than the shape of a diamond. We are talking about the exact angles, proportions, symmetry, and polish that affect the way a diamond handles light. The most popular diamond shape is the round cut, which is also the most standardized cut, since it always has a round outline.

They are so popular because the cutter individually shapes each one to suit the shape of the rough diamond. Because the round cut is more standardized than the others, it is widely popular among jewelry manufacturers and enjoys premium segment in diamond jewelry market.