Seven Rattle: Faceting Design Diagram

Helpful tips, details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Seven Rattle"


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

Seven Rattle Jeff Graham Facet Design 1Seven Rattle Jeff Graham Facet Design 2

Seven Rattle (DOME32.JRG)
By Jeff R. Graham
Copyright 2007
87.8% Light Return
Angles for R.I. = 1.62
71 facets + 7 facets on girdle = 78
7-fold, mirror-image symmetry
77 index
L/W = 1.026 T/W = 0.410 T/L = 0.399 P/W = 0.398 C/W = 0.339
H/W = (P+C)/W+0.02 = 0.757 P/H = 0.525 C/H = 0.448
Vol./W^3 = 0.280



Addition # 13 - Cut this in refractive indexes 1.62 to 2.14 with no changes. This is unusual and because it is seven-sided, it will need a custom setting. It has a lot of flash and looks very unusual when cut.

Seven Rattle 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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