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Forms of cut of diamonds

Summary of the forms of diamond cuts

The term brilliant is today so closely associated With the mineral diamond that people often speak of "brilliant" when they mean the mineral diamond.

The brilliant is the "classic" among all cut forms. Its designation applies exclusively to the circular form of cut which exhibits at least 32 facets and a table on the crown, and at least 24 facets and a culet on the pavilion.

The description diamond assumes the genuineness of the stone.

The facets are described as follows (Fig 191):

on the crown 8 table facets
8 upper main facets
16 upper girdle facets
on the pavilion 8 lower main facets
16 lower girdle facets

Simplified varieties of the brilliant cut are

Among the modified brilliant cuts are (Fig 192):

The number and arrangement of the facets is in general Similar to the brilliant cut, but occasionally the number and arrangement of the pavilion facets vary
(Fig 193). The present day step cuts have developed from one of the earliest styles of diamond cut, the table stone; they are:

 

Fig 191 The Facets of a Brilliant Fig 191 The Facets of a Brilliant

Fig 192 Forms of Diamond Cuts
Eight-cut Swiss-cut
Eight-cut Swiss-cut
Modified Brilliants
Oval-cut Navette or Marquise Drop Pendeloque or Pear
Oval-cut Navette or Marquise Drop Pendeloque or Pear

Modified Brilliants

Brilliant Heart-shape
Brilliant Heart-shape
Fig 193 Various arrangements of the pavilion facets in modified brilliant cuts
9 MAIN FACETS 8 MAIN FACETS
9 MAIN FACETS 8 MAIN FACETS
7 MAIN FACETS 
7 MAIN FACETS
6 MAIN FACETS 
6 MAIN FACETS
6 MAIN FACETS  4 MAIN FACETS 
6 MAIN FACETS 4 MAIN FACETS
Fig 194 Forms of Diamond Cuts  
Emerald cut, rectangular   Emerald cut, square 
Emerald cut, rectangular   Emerald cut, square 
Baguette   Trapeze  Square   Square  
Baguette   Trapeze  Square  
3-facet rose   6-facet rose   Double Dutch Rose   Simple Dutch Rose  Antwerp Rose 
3-facet rose   6-facet rose   Double Dutch Rose  Simple Dutch Rose  Antwerp Rose 

The various forms of diamond Roses (Fig 194) are likewise derived from a historical type of cut. Today they are only rarely used and for the repair of antique jewelry. However a new market has opened up for Roses and antique. cuts with the manufacture of reproductions of antique jewelry, and diamonds are being specially cut for these according to old models.

Scan D.N. Types of Brilliant Cut 
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