Anatomy

 

Whilst all diamonds share particular structural features, every diamond is unique. A diamond’s basic structure, or anatomy, determines its proportions, brilliance, dispersion and scintillation. Each of these parts have a specific name and we will provide you with a basic understanding of how each of these parts contribute to the diamond as a whole.

Brisbane diamond company anatomy of a diamond

A diamond is comprised of eight main components and a brief description of each part is below:

Girdle Diameter: The diameter is the width of the diamond measured girdle to girdle.

Table Size: The table is the top horizontal facet of the diamond. The average table size is expressed as a percentage of the diamond’s average girdle diameter.

Depth: The diamond’s overall depth from the surface of the table to the culet.

Pavilion: The pavilion is the lower portion of a diamond from the bottom edge of the girdle to the culet.

Crown: The crown is the upper portion of the diamond, from the top edge of the girdle to the table.

Girdle: The girdle is the middle portion of a diamond, a narrow section separating the crown from the pavilion, and is used as the diamond’s setting edge. The girdle thickness is described as a range from its thinnest to thickest areas.

Culet: The culet is the small facet at the bottom of a diamond intended to prevent chipping and abrasion to the point. The preferred culet is not visible with the unaided eye (graded “none” or “small”).

We believe it’s important to have a basic understanding of the anatomy of a diamond before making a decision about which diamond is the best one for you.

Symmetry

The symmetry grading of a diamond refers to the exactness of the shape and facets arrangements.  Although to your naked eye finish features only have a very small effect on appearance, symmetry is significant.

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Polish

Diamond polish is an important attribute to consider when purchasing a diamond as it influences how well light is able to pass through the diamond and therefore determines its' overall brilliance.

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Fluorescence

Fluorescence is the visible light some diamonds emit when they are exposed to invisible ultraviolet (UV) rays. In most cases, fluorescence does not negatively impact the diamond.

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