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


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

Scot Plaid (QTZ37.JRG)
By Jeff R. Graham
Copyright 1994
69.2% Light Return
Angles for R.I. = 1.54
97 facets + 6 facets on girdle = 103
6-fold, mirror-image symmetry
96 index
L/W = 1.155 T/W = 0.511 T/L = 0.442
P/W = 0.469 C/W = 0.202
H/W = (P+C)/W+0.02 = 0.691
P/H = 0.678 C/H = 0.293
Vol./W^3 = 0.271

Addition # 1 – This design is tough to cut because of the step cuts, and the small C6 facets (have to be exact) on the crown. This design is good for very light colored materials, notice it is not bright, but it has a lot of sparkle. Cut in refractive indexes 1.54 to 2.20 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.