Step’in Boxes: Faceting Design Diagram
Detailed information and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Step'in Boxes"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Step'in Boxes (MIR84.JRG)
By Jeff R. Graham
Copyright 2005
86.6% Light Return
Angles for R.I. = 1.62
33 facets + 8 facets on girdle = 41
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.257 T/L = 0.257 P/W = 0.438
C/W = 0.229 H/W = (P+C)/W+0.02 = 0.687 P/H = 0.637 C/H = 0.334 Vol./W^3 = 0.278
PAVILION
CROWN
Addition # 10 - Cut in refractive indexes 1.62 to 1.76 with no changes. This is a good Garnet cut and also works well in about any light to medium saturated stone. Note: P3 floats and can vary to fit rough. I usually cut them to look like the diagram.
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
A Look at African Paraíba Tourmaline Rough
Mint Tourmalines: Gemstones for Our Times
What is the Usambara Effect In Gemstones?
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!