Sholtz’s Strudel: 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 "Sholtz's Strudel"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Sholtz's Strudel (MIR6.JRG)
By Jeff R. Graham
Copyright 2004
91.8% Light Return
Angles for R.I. = 1.62
33 facets + 8 facets on girdle = 41
4-fold symmetry
96 index
L/W = 1.000 T/W = 0.204 T/L = 0.204
P/W = 0.422 C/W = 0.196
H/W = (P+C)/W+0.02 = 0.639
P/H = 0.661 C/H = 0.307
Vol./W^3 = 0.259
Addition # 9 - Note: The corners on this can be varied, in general, cut the corners as close to the diagram as you can. This cuts very fast and is nice in about any material. Cut in refractive indexes 1.62 to 1.93 with no 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.
Related Articles
Tourmaline Gem, Price, and Jewelry Information
Difficult Gemstone Separations
How to Describe a Tourmaline Crystal by its C Axis
Verdelite (Green Tourmaline) Buying Guide
Latest Articles
Milarite Value, Price, and Jewelry Information
Appraising Pearls: How to Grade Pearls
Agate Buying Guide
Carving Techniques for Handling Inclusions in Transparent Gems
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!