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.
Related Articles
Tourmaline Value, Price, and Jewelry Information
Mint Tourmalines: Gemstones for Our Times
Tourmaline Engagement Ring Stones: the Ultimate Guide
How Do Tourmalines Form?
Latest Articles
32 Green Gemstones (How Many Do You Know?)
A Guide to Antique Georgian Jewelry
Hambergite Value, Price, and Jewelry Information
Faceting a Gemstone Pendulum to Feature Inclusions
Never Stop Learning
When you join the IGS community, you get trusted diamond & gemstone information when you need it.
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!