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

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

Twirl Jeff Graham Facet Design Twirl Jeff Graham Facet Design2

Twirl (BEAD7.JRG)
By Jeff R. Graham
Copyright 2007
Angles for R.I. = 1.54
96 facets + 8 facets on girdle = 104
8-fold symmetry
96 index
L/W = 1.000
P/W = 0.968 C/W = 0.967
H/W = (P+C)/W+0.02 = 1.955
P/H = 0.495 C/H = 0.495
Vol./W^3 = 0.796

Addition # 14 – This is a very nice long bead. It works well in about any material. Note that the crown and pavilion are the same. A table can be cut at C6, P6, but I usually do not bother. Just use a ball burr and concave the ends slightly so that a bead spacer will fit in and protect the ends.

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.