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koala-t cut gems, faceted, cabochon, rough gem material.

Hand selected gemstone to provide for your every need.

koala-t cut gems
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Design choises  That we offer to our custom cut stone buyers.

There a great and many good gemstone designers to pick from
Jeffery Graham is my first choise however there quite a few like.
Gerald L. Wykoff
Glenn & Martha Vargas
To name just but a few.
 
 
 
 
 
Gram Easy Emerald by Jeff R. Graham

Gram Easy Emerald design

 

 
Please email me with a request for Material and cut design for your new custom cut gemstone









 Types and Forms of Cut

There is no general rule that can be applied t the varius cuts f gemstnes Therefre ne finds in the literature cnflicting attempts to classify them. Nevertheless, a distinction according to types of cut and forms of cut is quite possible.

Types of Cut

Based on the optical impression of the cut gemstone, three main groups, or types of cut, can be namded: the faceted cut, the plain cut, and the mixes cut.

Faceted cut 

 Thefaceted cut receives its character from a variety of small planes, the facets. It is applied mostly for transparent gems. Most faceted cuts can be divided inot three basic types, briloliant cuts with mostly rhomboid (lozenge) and triangular facets in a radial pattern, step cuts with trapezoid or rectangular facets in concentric rows, and mixed facet cuts combining both brilliant and step type facets.

Plain cut 

 The plain cut can be executed plain or arched as a cabochon or as a sphire. No facetes interrupt the even stone surface. The plain cut serves mainly nfor the cutting of agate and other opaque gemstones.

Mixed cut

The mixed cut is a combination of the faceted and plain cut. On the upper (or lower) part, the gemstone carries facets; on the other part, it is smooth, roundish, or plain. Occasionally there are cutting forms followed in which the cut is mixed, on the same side of the stone

Forms of Cut

An abundance of forms is derived from the basic types of gemstone cuts. They can be round, oval, cone-shaped, square, rectangular (bagguette), triangular, and multi-cornered. In addition, there are many forms that imitate familiar shapes, such as olive, pare,(dropor pendelopue), little ships (navette or Marquise), heart, trapeze, or barrel. A number of purely fantasy cuts can hardly be overlooked, and new forms are increasingly created by designers.

 
 

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