Back to Top

In this post we want to give you once crucial distinction: The distinction between the diamond cut and the diamond shape. Both Things actually refer to something completely different and at first we would like to talk about the diamond cut!

Topic Summary

Diamonds are known for their ability to sparkle and transmit light strongly. By the mention of the word ‘diamond cut’ the first thing that comes into mind is shape (round, oval, heart, pear or marquise). However, diamond cut does affect its grade and it is generally about how well a diamond’s facet interacts with light.

Precise workmanship and artistry is needed to fashion a diamond stone so that its symmetry, proportions and polish deliver the magnificent return of light that is only possible with a diamond. Diamond cut is paramount to its final value and beauty. And of all diamond 4Cs, it is the most difficult, complex and technically difficult to analyze.

Full Diamond Shapes Guide

To determine a diamond’s cut grate of a standard round brilliant diamond (which is the shape that dominates a majority of diamond jewelry), proportion calculation of facets, which influence a diamond’s face-up appearance is needed. This will allow a person to evaluate how successfully diamond interacts with light to create that desirable visual effects like:

• Brightness: This refers to both external and internal white light reflected from a diamond. Light enters from the top of the diamond, and then it is broken down into a rainbow of spectral colors and then reflected back and forth in the interior of the stone by bouncing off the mirror.

• Fire (Dispersion): This refers to the rainbow colors that are reflected back to the eye from the diamond. After the light has bounced back and forth in the diamond, it leaves through the crown and spraying separated flashes of colors.

• Scintillation: This refers to the number of sparkle a diamond produces; including the pattern of dark and light areas caused by reflections within the diamond. In other words, it is the play of light you see with the movement of the diamond, shown by the sparkling of the diamond’s surface.

Other factors must also be considered in relation to its design such as: its weight in relation to its width, girdle thickness (which affects a diamond’s toughness), the symmetry of the diamond’s facet preparation in addition to the worth of the elegance on those facets.

Key Points

• A diamond’s Cut is its most important characteristic
• A diamond Cut influences a diamonds overall beauty.
• A diamond Cut mainly affects what people perceive about spackle

The Grading Scale – Ways You Can Identify The Diamond Qualities

Diamond Cuts QualityAs mentioned, a diamond cut plays a very big role in determining the quality of it. In other words, it will affect diamond cut grade will affect the quality of a diamond. Light is used to determine the quality of diamond and hence can be used to determine the best quality.

• Poor Diamond Cut: A poor cut diamond is represents roughly the top 35% of diamond cut quality. These type diamonds tend to have a glassy or dull. In other words, it may be difficult to differentiate this with a glass.

• Good Diamond Cut: This kind of cut is represented by roughly 25% of diamond cut. This kind of diamond will reflect most light that enters. However, it will not reflect light as much as a very good cut grade diamond. This type of diamond cut is widely found but soft at a very affordable price.

• Very Good Diamond Cut: This cut represents roughly the top 15% of diamond cut quality. It will reflect nearly as much light as the ideal cut; however, for a lower price. This is the most common type of diamond found in many stores.

• Ideal Diamond Cut: This type of diamond cut is rare to find and represents about 3% of diamond cut quality. This type of diamond will reflect most light which enter the diamond. Buying this kind of diamond will cost more.

• A Signature Diamond Cut: This is type represents about 1% of diamond cut quality. This is the highest grade of polish. Its symmetry allows it to reflect even more light compared to the ideal diamond cut. The fact of the matter is that this type of diamond is very rare and very expensive to buy and own.


Well, now you know that a diamond cut does not refer to the shape it comes in but its ability to sparkle and transform light. To get all the details on diamond shapes in general go to this page in order to find the best diamond shape for your personal preferences.  The better a diamond cut is, the more expensive it will. In other words, this is what affects the quality of a diamond.