The Four Cs: Cut

Cut refers to two different decisions:

The first is the shape of the stone: round brilliant, pear, marquise, princess, oval, emerald, radiant, heart, and trillion are the most common, although custom cuts are available upon request.

The more important definition refers to the proportions of the stone. A diamond with excellent proportions (cut) will deliver the most brilliance, while a diamond with poor proportions will look dull and lifeless.

Ideal cut is only applied to round brilliant diamonds, fancy shapes are not subject to the exact angles and measurements that have been worked out for these stones. Each fancy shape, like marquise, does have good and bad cuts, but are not listed with exact measurements.

Cut is very important, a stone that may lack in other areas can still look beautiful with a good cut.