Diag-nal 1.50: Faceting Design Diagram

Tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Diag-nol 1.50-Reflector".


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Diag-nal 1.50 - Reflector (MC14.JRG) Amethyst
By Jeff R. Graham
Copyright 1999
89.4% Light Return
Angles for R.I. = 1.54
15 facets + 4 facets on girdle = 19
2-fold symmetry
96 index
L/W = 1.500 T/W = 0.856 T/L = 0.571
P/W = 0.500 C/W = 0.338
H/W = (P+C)/W+0.02 = 0.858
P/H = 0.582 C/H = 0.39
Vol./W^3 = 0.767

Addition # 4 - This is another neat flash, the shapes are diamonds. It is easy and fast to cut and makes a nice color flash stone. I like it in a larger size (6x9mm and up) and about any color. Works well in Tourmaline and Topaz… Cut this in R.I. 1.54 to 1.76 without changes.

Random - Cosine - ISO

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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