Triga Light House: Faceting Design Diagram

Successful tips and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Triga Light House"


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

Triga Light House (MC72.JRG)
By Jeff R. Graham
Copyright 2002
80.2% Light Return
Angles for R.I. = 1.54
58 facets + 6 facets on girdle = 64
3-fold, mirror-image symmetry
96 index
L/W = 1.036 T/W = 0.509 T/L = 0.492
P/W = 0.420 C/W = 0.194
H/W = (P+C)/W+0.02 = 0.633
P/H = 0.663 C/H = 0.306
Vol./W^3 = 0.204

Addition # 7 - This is brighter than the ray trace might lead you believe. Cut it in lightly saturated material, notice that it's deep. This is similar to my original "Light house" cut, only in a trillion shape, of course. Cut this in refractive indexes 1.54 to 1.93 (86%) with no changes.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler

Jeff R. Graham

The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.

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