Faceting Design Diagram: Diego Light House – Quartz – Citrine, Amethyst, Ametrine, Smokey, Rose


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

Diego Light House (MC77.JRG)
By Jeff R. Graham
Copyright 2002
88% Light Return
Angles for R.I. = 1.54
43 facets + 4 facets on girdle = 47
1-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.197 T/L = 0.197
P/W = 0.307 C/W = 0.185
H/W = (P+C)/W+0.02 = 0.513
P/H = 0.599 C/H = 0.362
Vol./W^3 = 0.117

Addition # 7 – This is a variation of my original “Light House” design that is free online. A lot of people have asked me for another design like it for a larger stone. Here it is… I like this in lighter colors 1.54 to 1.93 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.