Suz’s Bar: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Suz's Bar"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Suz's Bar (MC69.JRG)
By Jeff R. Graham
Copyright 2002
84.3% Light Return
Angles for R.I. = 1.62
29 facets + 10 facets on girdle = 39
2-fold, mirror-image symmetry
96 index
L/W = 3.000 T/W = 2.236 T/L = 0.745
P/W = 0.457 C/W = 0.201
H/W = (P+C)/W+0.02 = 0.678
P/H = 0.674 C/H = 0.297
Vol./W^3 = 1.015
Addition # 7 - This is fast to cut. Notice that the table has no meets, this is for weight retention and speed. This is designed for long Tourmaline crystals, especially if the rough has a gradual color change. Honestly, there is not much that can be cut in this type of rough. I designed this cut for that reason…
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 Gem, Price, and Jewelry Information
Rubellite Tourmaline Buying Guide
Trapiche Gems: An Introduction
A View of the Quartzsite Gem Shows
Latest Articles
Table of Refractive Indices and Double Refraction of Selected Gems
Red Gemstones: Ruby, Spinel, Garnet, and Other Great Picks for Jewelry
Jadeite Value, Price, and Jewelry Information
Tips for Cutting and Polishing Halite
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!