Iota: Faceting Design Diagram
Successful tips, details, and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Iota".
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Iota (CHECK64.JRG)
By Jeff R. Graham
Copyright 2003
88.2% Light Return
Angles for R.I. = 1.54
93 facets + 8 facets on girdle = 101
12-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.343
T/L = 0.343 P/W = 0.446 C/W = 0.146
H/W = (P+C)/W+0.02 = 0.612
P/H = 0.729 C/H = 0.239
Vol./W^3 = 0.185
Addition # 8 - Notice that the burst on the pavilion only meets the breaks at two places/break on each side. Cut in refractive indexes 1.54 to 2.14 (91.3%) with no changes. This works well in about any colored material.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
