Faceting Design Diagram: Deflexion – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose


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

Deflexion (MIR41.JRG)
By Jeff R. Graham
Copyright 2004
86.8% Light Return
Angles for R.I. = 1.54
46 facets + 9 facets on girdle = 55
3-fold, mirror-image symmetry
96 index
L/W = 1.004 T/W = 0.348 T/L = 0.346
P/W = 0.387 C/W = 0.169
H/W = (P+C)/W+0.02 = 0.576
P/H = 0.671 C/H = 0.294
Vol./W^3 = 0.174

Addition # 9 – This is interesting and cuts fairly fast. It works well in about any material. Cut in refractive indexes 1.54 to 2.14 with no changes. I like this in Sapphire, especially light to medium colors.

 

 

 


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Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Gram Faceting Archive of Information
This edited version of an article by the late Jeff Graham is part of a special archived informational series from Gram Faceting. Used with permission.