Rhomboid Split: Faceting Design Diagram


Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Rhomboid Split".

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By Jeff R. Graham, updated on

Sunstone (Feldspar, Bytonite, Labradorite, Spectrolite, Orthoclase)

Rhomboid Split Jeff Graham Facet Design

Rhomboid Split Jeff Graham Facet Design

Rhomboid Split (SUN28.JRG)
By Jeff R. Graham
Copyright 2006
90.6% Light Return
Angles for R.I. = 1.54
13 facets + 4 facets on girdle = 17
2-fold symmetry
96 index
L/W = 3.000 T/W = 0.917 T/L = 0.306 P/W = 0.450
C/W = 0.175 H/W = (P+C)/W+0.02 = 0.645 P/H = 0.698 C/H = 0.271 Vol./W^3 = 1.046

PAVILION

CROWN

Addition # 11 - Cut in refractive indexes 1.54 to 2.14 with no changes. This is designed for long skinny-colored material and will work in gold as well. This is basically a reflector and easy to cut. The L/W is not critical.

Rhomboid Split Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler


Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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