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


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

Dagger Bottom (QTZ34.JRG)
By Jeff R. Graham
Copyright 1994
74.4% Light Return
Angles for R.I. = 1.54
41 facets + 4 facets on girdle = 45
4-fold symmetry
96 index
L/W = 1.000 T/W = 0.393 T/L = 0.393
P/W = 0.483 C/W = 0.214
H/W = (P+C)/W+0.02 = 0.718
P/H = 0.674 C/H = 0.298
Vol./W^3 = 0.315

Addition # 1 – This design cut fairly fast, even if it looks a little mixed up at first look. Be careful when you cut the top, make sure that you cut to center point and make the meets. Cut in refractive indexes 1.54 to 1.93 with no changes. light material work well…


Random – Cosine – ISO

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.