An ideal cut isn’t always the best cut for a diamond. New cutting and polishing techniques have been developed, and as a result, we see more “top” diamond cuts than ever.
An excellent cut is essential to a diamond’s beauty because even a diamond with outstanding color and clarity will not display the sparkle that diamonds are famous for if its components don’t interact with light as they should.
Diamond measurements are calculated and applied to a cut grading scale that makes it easy to understand how well each reflects light:
Ideal cut: Represents roughly the top 3% of diamond quality based on reduction. It reflects nearly all light that enters the diamond. A exquisite and rare cut.
Excellent cut: Represents roughly the top 15% of diamond quality based on cut. Reflects nearly as much light as the ideal cut, but for 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 perfect 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: This includes all diamonds that do not meet the performance standards of a fair cut. These diamonds are generally deep and narrow or shallow and wide and tend to lose most of the light out the sides and bottom. The Blue Nile does not carry diamonds with cut grades of poor. Check out the Helzberg diamond, pink diamond heart ring, the pink gold diamond ring where you will find a wide range of jewelry sure to meet your personal needs
The cut of a diamond comprises a collection of observations which together determine various levels of its light performance including fire (dispersion), scintillation, brightness, etc. the cut of a Diamond is measured by examining and evaluating different forms of brilliance. As the light rays pass through a diamond, the nature of its reflection and refraction determines the levels of brilliance in a diamond. These light effects also depend on the shape, dimension, polish, and symmetry of a diamond.
To understand the diamond cut, we need to consider a set of characteristics including width, depth, girdle, table, crown, pavilion, etc. of a diamond. A diamond is categorized as a shallow cut, ideal cut, and deep cut based on its exterior or outer profile. A shallow Cut Diamond or a deep cut diamond appears dark and dull because of its poor ability to reflect lights while an ideal cut preserves its brilliance to a large extent. The fire behavior also depends on the polish and symmetry of a diamond.
Better polish of the outer sides in an ideal cut and smoothness and the symmetric alignment of its diamond facets make the stone more bright and sparkling. In the GIA or AGSL Diamond grading report, we find a detailed explanation regarding cut grades on polish and symmetry. The grades are classified as excellent (EX), very good (VG), good (G), fair (F) or poor (P). It is easy to detect the higher quality of diamonds given the grades.
As categorized by the Gemological Institute of America (GIA), three basic diamond cuts are brilliant cuts, step cuts, and mixed cuts. Among them, the most sought-after Diamond Cuts are round brilliant cuts, emerald cuts, princess cuts, Asscher cuts, etc. Among the antiqued diamond cuts, the rose cut, and the old miner cut are popular.
The heart-shaped diamond is another unique cut that carries the flavor of romance and style together. A pear-shaped diamond cut is an intelligent combination of oval and marquise cuts that features a chic yet old-world charm.
Sometimes, a particular cut can make a diamond look bigger and better. One of such appealing diamond cuts is the cushion cut. An exclusive cut enhances the quality of a Diamond. As a result of this distinctive craftsmanship, a rough, unpolished diamond gets a beautiful make-over that win a thousand hearts. The interplay of light in and out of the diamond facets is essential to augment beauty and sparkle. And, a good cut does it all!