In the diamond world, we make mention of the Table, Crown, Girdle, Pavilion, and Culet. We also write about the facets, diameter, and depth of stones. This vocabulary is all part of the daily language that we use when we talk about a diamond stone.
The Table is the facet located on the top and center of the diamond. It is the largest facet since it’s on top of the stone. The Table is too important for the diamond because it’s the main place where light enters and exits reflect from the diamond. It’s helping gather light from above and either reflects it.
The Crown is the top portion of the stone between the Table and therefore the Girdle. It contains several forms of Facets consisting of 8 bezels, 8 stars, and 16 upper Girdle Facets that gather and disperse light to make brightness, fire, and a scintillating pattern of sunshine and dark. In most settings, this is often the part of the diamond stone which is above the prongs that hold the stone in place. Just like the Table, it’s one of the foremost visible surfaces.
The Pavilion is the bottom portion of the diamond opposite side of the Crown. The Pavilion Facets consist of 16 lower facets girdle, 8 Pavilion Facets, and an optional Culet that reflects the shine through the Crown to the observer’s eye. All of those Facets work together to make each diamond’s unique appearance. The more light which will go through the diamond, the more brilliance it’ll have.
The Culet is a facet located at the lowest of the diamond’s Pavilion and is meant to stop chipping and abrasion to the purpose. The Culet must be sufficiently small to permit correct light refraction. Its size can affect the face-up appearance as you’ll commonly see the Culet through the Table.
Three More Important Diamond Terms
Facet is the term used for a flat part (surface between edges) of a cut and polished diamond. In the standard round brilliant cut, there are 57 or 58 facets.
The Depth is the total height of the diamond measured from the Table to the Culet. It’s determined as a percentage of the overall diameter of the diamond. Learn how Depth affects a diamond’s sparkle here.
The Diameter is the width of a polished diamond at the widest part, specifically measured from one Girdle edge to the opposite Girdle edge straight through the center of the stone. Looking at the diamond from the top down, this is the distance from side to side.