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Diamond Cut

The term "diamond cut" refers to both the shape of a diamond and the quality of the diamond's facets, which significantly impact its brilliance and overall appearance.


There are two primary aspects of the diamond cut:

1. **Diamond Shape:** This refers to the geometric outline or silhouette of the diamond when viewed from above. The most common diamond shapes include round, princess (square or rectangular with pointed corners), emerald (rectangular with cut corners), cushion (square with rounded corners), and many more. The choice of shape is a matter of personal preference.

2. **Diamond Facet Quality:** This aspect of the diamond cut refers to the precision and quality of the diamond's facets, including their angles, proportions, symmetry, and polish. The quality of the cut plays a crucial role in how well the diamond reflects and refracts light, determining its brilliance, fire (color dispersion), and overall visual appeal. The gemological laboratories grade the cut of a diamond on a scale that typically includes the following categories:

  • Excellent:    Diamonds with an excellent cut exhibit maximum brilliance and fire. Their facets are meticulously crafted to reflect and refract light optimally.

  • Very Good:  Diamonds with a very good cut have exceptional light performance and are nearly as brilliant as excellent-cut diamonds.

  • Good:          Diamonds with a good cut display a good balance of brilliance and fire, making them attractive choices, often at a more budget-friendly price point.

  • Fair:             Diamonds with a fair cut may not be as brilliant as the higher grades and may exhibit some compromises in their proportions.

  • Poor:           Diamonds with a poor cut may lack brilliance and appear dull due to suboptimal proportions and facet quality.

A diamond cut refers to the way a diamond has been shaped and faceted from its rough, natural form into a polished gemstone. The quality of a diamond cut is one of the most important factors that determine a diamond's visual appeal and how it interacts with light. It is not to be confused with the diamond's shape, which refers to the overall outline of the diamond, such as round, princess, emerald, etc.

The diamond cut is evaluated based on several key aspects:

  • Proportions: Proportions include the angles and relative measurements of different facets within the diamond. A well-proportioned diamond will reflect and refract light in an optimal way, resulting in a brilliant and sparkling appearance.


  • Facet Arrangement: The arrangement of facets, including the crown, pavilion, and table facets, contributes to how the diamond interacts with light. A balanced arrangement ensures that light enters the diamond, reflects internally, and exits in a beautiful display of sparkle.


  •  Symmetry: Symmetry refers to how well the diamond's facets align and interact with one another. A diamond with excellent symmetry will exhibit a high level of sparkle and brilliance.


  • Polish:   The polish of a diamond is evaluated based on the smoothness of its surface. A diamond with excellent polish will have minimal surface imperfections, resulting in a clear and lustrous appearance.


  •  Cut Grade:  Many gemological laboratories provide a cut grade for diamonds, which is an overall assessment of the diamond's cut quality. Common cut grades include Excellent, Very Good, Good, Fair, and Poor.

A well-cut diamond will exhibit properties such as brightness (the white light reflected), fire (the dispersion of light into colors), and scintillation (the flashes of light and dark areas as the diamond moves). It will also appear more lively and brilliant to the eye.

The quality of the diamond cut has a significant impact on the overall value and desirability of a diamond. When selecting a diamond, it's essential to pay attention to its cut as it can greatly influence its beauty and sparkle.

The cut grade is one of the "Four Cs" used to assess the quality of a diamond, with the other three being carat weight, color, and clarity. A well-cut diamond, regardless of its shape, will have the best light performance, making it sparkle and appear more beautiful. When selecting a diamond, it's essential to consider both the shape and the quality of the cut to ensure you get a diamond that meets your aesthetic preferences and maximizes its brilliance.

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