Golden Scale: 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 "Golden Scale".


Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)

Golden Scale (MC84.JRG)
By Jeff R. Graham
Copyright 1998
75.8% Light Return
Angles for R.I. = 1.62
33 facets + 5 facets on girdle = 38
1-fold, mirror-image symmetry
96 index
L/W = 1.048 T/W = 0.698 T/L = 0.666
P/W = 0.371 C/W = 0.127
H/W = (P+C)/W+0.02 = 0.518
P/H = 0.715 C/H = 0.246
Vol./W^3 = 0.161

Addition # 7 - This is quite nice and not as hard to cut as it may look. It is important to have the correct L/W=1.048 and the rest will cut in fairly easily. This works well in about any material.


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.

Never Stop Learning

When you join the IGS community, you get trusted diamond & gemstone information when you need it.

Become a Member

Get Gemology Insights

Get started with the International Gem Society’s free guide to gemstone identification. Join our weekly newsletter & get a free copy of the Gem ID Checklist!