Shutter 7: 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 "Shutter 7"


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

Shutter 7 Jeff Graham Facet Design 1Shutter 7 Jeff Graham Facet Design 2

Shutter 7 (DOME33.JRG)
By Jeff R. Graham
Copyright 2007
83.8% Light Return
Angles for R.I. = 1.62
57 facets + 7 facets on girdle = 64
7-fold symmetry
77 index
L/W = 1.026 T/W = 0.220 T/L = 0.215 P/W = 0.398 C/W = 0.385
H/W = (P+C)/W+0.02 = 0.802 P/H = 0.495 C/H = 0.480
Vol./W^3 = 0.277



Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is seven sided and will need a custom mounting. The flash is very interesting and this works best in light saturated material.

Shutter 7 Jeff Graham Facet Design 3

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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