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


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

Starred (QTZ53.JRG)
By Jeff R. Graham
Copyright 1997
89.8% Light Return
Angles for R.I. = 1.54
71 facets + 10 facets on girdle = 81
5-fold, mirror-image symmetry
80 index
L/W = 1.000 T/W = 0.471 T/L = 0.471
P/W = 0.428 C/W = 0.176
H/W = (P+C)/W+0.02 = 0.624
P/H = 0.685 C/H = 0.283
Vol./W^3 = 0.199

Addition # 2 – This is nice in Electric Blue Topaz too. It cuts easy in a larger stone, and is good in any color, 1-16cts. I sell a lot of this shape in Tourmaline earrings. It is an interesting shape, different than a round or square, but still easy to set. Cut in refractive indexes 1.54 to 1.93 (87.4%) with no changes.


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.