- Cut is a diamond's most important characteristic.
- It has the greatest overall influence on a diamond's beauty.
- It determines what we generally think of as sparkle.
A diamond's cut grade is an objective measure of a diamond's light performance, or, what we generally think of as sparkle. When a diamond is cut with the proper proportions, light is returned out of the top of the diamond . If it is cut too shallow, light leaks out of the bottom; too deep and it escapes out of the side.
- Our most brilliant cut, representing roughly the top 1% of diamond quality based on cut. The highest grades of polish and symmetry allow it to reflect even more light than the standard ideal cut.
- Ideal cut : Represents roughly the top 3% of diamond quality based on cut. Reflects nearly all light that enters the diamond. An exquisite and rare cut.
- Very good cut : Represents roughly the top 15% of diamond quality based on cut. Reflects nearly as much light as the ideal cut, but for a lower price.
- Good cut : Represents roughly the top 25% of diamond quality based on cut. Reflects most light that enters. Much less expensive than a very good cut.
- Fair cut : Represents roughly the top 35% of diamond quality based on cut. Still a quality diamond, but a fair cut will not be as brilliant as a good cut.
- Poor cut : Diamonds that are generally so deep and narrow or shallow and wide that they lose most of the light out the sides and bottom.