Speed Spike: 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 "Speed Spike".


Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

 Jeff Graham Facet Design

 Jeff Graham Facet Design

Speed Spike (MIR56.JRG)
By Jeff R. Graham
Copyright 2005
85.3% Light Return
Angles for R.I. = 1.54
37 facets + 9 facets on girdle = 46
3-fold, mirror-image symmetry
96 index
L/W = 1.004 T/W = 0.290 T/L = 0.289 P/W = 0.398
C/W = 0.191 H/W = (P+C)/W+0.02 = 0.609 P/H = 0.654 C/H = 0.313 Vol./W^3 = 0.184



Addition # 10 - This cuts pretty easy and makes a nice stone. Cut in refractive indexes 1.54 to 2.14 with no changes. This design is ideal for 1 to 2 carat earrings in about any light to medium saturation.

Jeff Graham Facet 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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