DIAMOND ANATOMY

Once cut and polished, all diamonds possess a shared set of characteristics, often referred to as the anatomy of the diamond. While the individual proportions, angles and placement of these common characteristics vary for diamonds of different shapes, their definition is the same.

CROWN

Top part of a faceted gem, above the girdle.

TABLE FACET

Facet at the top of the crown, usually the largest facet on the stone.

STAR FACETS

Facets that extend from the table edge toward the girdle.

BEZEL FACETS

Kite or diamond-shaped facets between the table and the girdle.

UPPER GIRDLE FACETS

Facets that extend from the girdle edge toward the table. Also known as “upper halves” in the trade.

GIRDLE

Narrow section that forms the boundary between a stone’s crown and pavilion.

LOWER GIRDLE FACETS

Facets that extend from the girdle edge toward the culet. Also known as “lower halves” in the trade.

PAVILION

Lower part of a faceted gem, below the girdle.

PAVILION MAIN FACETS

Kite or diamond-shaped facets between the girdle and the culet.

CULET

Small facet at the bottom of the diamond where the pavilion mains meet. Its purpose is to protect loose diamonds against abrasion and chipping.