Easy Tri: Faceting Design Diagram

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

Easy Tri (MC7.JRG)
By Jeff R. Graham
Copyright 1999
83.7% Light Return
Angles for R.I. = 1.54
31 facets + 12 facets on girdle = 43
3-fold, mirror-image symmetry
96 index
L/W = 1.001 T/W = 0.536 T/L = 0.535
P/W = 0.399 C/W = 0.175
H/W = (P+C)/W+0.02 = 0.593
P/H = 0.672 C/H = 0.295
Vol./W^3 = 0.187

Addition # 4 - This is quick and easy to cut, I designed it for small stones 4-8mm is best. I use it a lot for earrings, it works well in Garnet, Tourmaline, Quartz… Cut this in R.I. 1.54 to 2.14 without changes.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler