Kwiat Tiara Diamond Education

Diamond Anatomy

To learn more about the different parts of a diamond, roll your mouse over the image.

• Table &
  Table Percentage

• Crown
  Angle

• Pavilion
  Angle

• Crown

• Girdle

• Pavilion

• Depth &
  Depth
  Percentage

• Culet

• Table

  The flat facet on the top of the diamond, typically the largest on a polished stone.

  Table Percentage

  The table size expressed as a percentage of the overall diameter of the diamond. The table percentage appears on the GIA certificate.

• Crown Angle

  The angle formed by the girdle plane and the bezel facets.

• Pavillion Angle

  The angle formed by the girdle plane and the pavilion main facets.

• Crown

  The top portion of the diamond above the girdle that consists of the table facet and the numerous facets just below it.

• Girdle

  The outer edge along the Widest part of the diamond. The Width of the girdle appears on the GIA certificate expressed as a range from the thinnest to the thickest point. Where a girdle is extremely thick, a diamond carries weight that does not add to its visual size appearance. Where a girdle is extremely thin, the diamond is more susceptible to damage. In finer diamonds, the girdle is polished and faceted.

• Pavilion

  The bottom portion of the diamond below the girdle.

• Depth

  The height of the diamond from the culet to the table measured in millimeters.

  Depth Percentage

  The total depth of the diamond expressed as a percentage of the overall diameter of the diamond. The depth percentage appears on the GIA certificate.

• Culet

  The point or tiny flat facet at the bottom of the diamond’s pavilion. Modern cut diamonds generally have no culet at all. In the early part of the 20th century the purpose of the culet facet was to protect the tip of the diamond from damage Today; once a diamond is set in jewelry the setting will provide protection from Wear.