Foiled: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Foiled".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Foiled (MC79.JRG)
By Jeff R. Graham
Copyright 2002
91.6% Light Return
Angles for R.I. = 1.62
67 facets + 12 facets on girdle = 79
6-fold, mirror-image symmetry
96 index
L/W = 1.073 T/W = 0.416 T/L = 0.388
P/W = 0.430 C/W = 0.209
H/W = (P+C)/W+0.02 = 0.658
P/H = 0.653 C/H = 0.317
Vol./W^3 = 0.237
Addition # 7 - This is nice, easy to cut and has a fancy look to it when finished. Cut in refractive indexes 1.62 to 1.93 with no changes. This is very good for light to medium saturated materials.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
