Anatomy Of A Round Diamond : Diamonds Education

Table of Contents

Anatomy of a round diamond is the first step towards diamond education. A Diamond is one of the best known and precious gemstone in the world. Each part of a diamond has a specific name and its fundamental study is essential to understand the diamond as a whole.
The basic parts in the diamond anatomy are: Facets, Crown, Table, Diameter, Pavilion, Girdle, Depth and Culet.

Anatomy Of A Round DiamondAnatomy Of A Round Diamond

  1. FACETS: Facets are basically the flat faces on the surface of a diamond. A diamond facet is any smooth cut edge on a diamond. Cutting a diamond with symmetrical facets contributes to its brilliant and shine.
    – A Round Brilliant has Total 58 Facets
  2. DEPTH: The height of a diamond from the culet to the table. It is measured in mm.
    -Ideal Depth for a Round Diamond is 58% and 64%
  3. DIAMETER: The width of the diamond measured through the girdle. It is measured in mm.
  4. CROWN: The upper part of the diamond above the girdle. The Crown angle in the well-cut diamond should be 33 to 35 degrees. It consists of a large flat area on top called a table, and several facets below it (star, bezel and upper girdle facets) forms the parts of the crown.diamond crown - parts of diamond
  • Table Facets: Table is the largest and flat facet on the top a diamond..An ideal table should be between 53% and 64%
  • Star Facets: These facets are adjacent to the table on the top of the diamond and create a star-shaped effect
  • Bezel Facets: Bezel Facet is also known as Kite Facet (Because of its shape) and it is between the girdle and the table
  • Upper Girdle: It is the lowest facets on the crown Facets and just above the girdle.
  1.  GIRDLE: Girdle is the outer edge and the widest part of the diamond. The girdle may be faceted (polished) or smooth. Girdle is where the crown meets the pavilion. Girdle can be of one or more of the following:diamond-girdle-thickness-diagram(common abbreviation know in different countries.)
  • Extremely Thin ( ETN, ETH, XTN, EXN)
  • Very Thin ( VTN, VT, VETN)
  • Thin (T, TN, TH)
  • Medium (M, ME, MD, MED)
  • Slightly Thick (STK, ST, SLTK, SLTH)
  • Thick (T, TK, TH)
  • Very Thick (VTK, VTH)
  • Extremely Thick (ET, EXTK, XT, XTK)
  • Faceted – (F, FA, FAC)
  • Smooth – (S, SM)
  1. PAVILION: Includes the lower part of the diamond below the girdle. Lower girdle facets, Pavilion facets and culet forms the parts of the pavilion.rbc-pavilion-diamond
  • Lower Girdle Facets: The highest facets on the pavilion and it is right below the girdle.
  • Pavilion Facets: Elongated facets and closest to the culet.
  • Culet: Small Facet at the bottom of the pavilion. Graded “none”(Pointed) or “small”.

So, This was the basic understanding of the parts of a round diamond which is the first and foremost requirement to study about a diamond. Understanding anatomy of a round diamond is essential. We hope this article helped to gain basic education about different parts of a diamond. Got question? comment below, we would really love to help you.

Heer Shah

Heer Shah

Heer Shah is currently studying business management from Mumbai university. Beside managing his curly hair, Heer loves to share his views on gems and jewellery. Being diamond trading as his family business, Heer always talks diamonds

2 thoughts on “Anatomy Of A Round Diamond : Diamonds Education”

    • Hi there,
      You mentioned here is Gujarati (Gujarati is an Indian regional language) terms related to diamonds.

      – Taliyu or તળિયું means Pavilion
      – Mathalu or મથાળું means Crown
      – Pel or પેલ means Facet
      – “single no hero” means Single Cut Diamond (16-18 facets diamonds)
      – “double no hero” means Double/Full Cut Diamond (56-58 facets diamonds)

      Hope that was helpful. Good Day.


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