Quark: Faceting Design Diagram

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


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

Jeff Graham Faceting DesignJeff Graham Faceting Design

Quark (MIR74.JRG)
By Jeff R. Graham
Copyright 2005
87% Light Return
Angles for R.I. = 1.62
37 facets + 16 facets on girdle = 53
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.245 T/L = 0.245 P/W = 0.434
C/W = 0.249 H/W = (P+C)/W+0.02 = 0.703 P/H = 0.618 C/H = 0.354 Vol./W^3 = 0.250



Addition # 10 - Cut in refractive indexes 1.62 to 1.76 with no changes. This is designed for lightly saturated materials. I designed it for some pastel Afghan Tourmaline. It cuts fairly easy and works in about any size. I prefer sizes over 6mm. Note: P5 is cut short and just floats, the tier is not critical. It is done that way to add some interest to the flash, it makes "V" reflections. You can cut it to center point if you wish.

Jeff Graham Faceting Design

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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