Cushion Triple Star: Faceting Design Diagram

Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called Cushion Triple Star.


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

Cushion Triple Star (TLINE9.JRG)
By Jeff R. Graham
Copyright 1993
80.9% Light Return
Angles for R.I. = 1.62
89 facets + 16 facets on girdle = 105
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.539 T/L = 0.539
P/W = 0.449 C/W = 0.210
H/W = (P+C)/W+0.02 = 0.679
P/H = 0.662 C/H = 0.309
Vol./W^3 = 0.248

Gram Book 1 - This is a nice design for most any material and/or color. It cuts pretty fast and is not hard, yet it looks like it is involved to do, 1-16cts. Cut in refractive index 1.62 to 2.14 (83.9%) 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.

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