Tess’s Pentagram: 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 "Tess's Pentagram"


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

Tess's Pentagram (MC71.JRG) Ametrine
By Jeff R. Graham
Copyright 2002
82.6% Light Return
Angles for R.I. = 1.54
23 facets + 5 facets on girdle = 28
1-fold, mirror-image symmetry
96 index
L/W = 1.282 T/W = 0.820 T/L = 0.640
P/W = 0.396 C/W = 0.175
H/W = (P+C)/W+0.02 = 0.591
P/H = 0.670 C/H = 0.296
Vol./W^3 = 0.256

Addition # 7 - This is not all that tough to cut, although it is not really meet point. Cut a L/W=1.282 preform, which is why I have you cut the girdle first. Cut P1 to the length you think it should be depending on the rough. Then alternate P2(G),P3(G)to get it to the L/W. Notice that by doing it this way it will set the outline shape. If you are off a little, it is not a problem, you may need to tweak the crown a little. This works in Beryl…..

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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