9 By - Reflector Gem design9 By - Reflector Gem design

9 By – Reflector: Faceting Design Diagram

Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "9 By"


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

9 By - Reflector Gem design

9 By - Reflector (CHECK11.JRG)
By Jeff R. Graham
Copyright 2001
93.1% Light Return
Angles for R.I. = 1.54
17 facets + 4 facets on girdle = 21
2-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.304 T/L = 0.304
P/W = 0.435 C/W = 0.262
H/W = (P+C)/W+0.02 = 0.716P/H = 0.607 C/H = 0.365
Vol./W^3 = 0.341

Addition # 6 - This is a very simple, fast design to cut. It works well for earrings in about any type of material.

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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