Diagrams


 
The Standard Round Brilliant

This cut has 57 facets: a table, 8 bezel facets, 8 star facets, and 16 upper girdle facets on the crown.

8 pavilion main facets, 16 lower girdle facets on the pavilion.

It may or may not have a culet on the pavilion. If it does have a culet, this cut has 58 facets.


 


 
The Oval Brilliant

This cut combines the brilliance of the standard round brilliant and has the depth of color of the emerald cut. This cut is the most popular  for jewelry.



 


 
The Emerald Cut

Rectangular or square step cut with diagonally cut corners and two , three or four rows of facets parallel to the girdle on the crown and pavilion.

If the shape is square, it is called a square emerald cut. It is frequently used to fashion emeralds; hence the name.


 


 
The Pear Brilliant Cut

This is the pear shaped brilliant cut, variation of the brilliant cut with a pear shaped girdle outline and 56 to 58 facets.

 


 
The Marquise Cut

Elongated boat shaped brilliant cut with curved sides and pointed ends, developed in France in the 1740s.

Believed to have been named after the Marquise de Pompadour, a mistress of King Louis XV.