Boxed: 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 "Boxed".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Boxed (TLINE20.JRG)
By Jeff R. Graham
Copyright 1995
81.5% Light Return
Angles for R.I. = 1.62
43 facets + 8 facets on girdle = 51
2-fold, mirror-image symmetry
96 index
L/W = 1.203 T/W = 0.525 T/L = 0.436
P/W = 0.454 C/W = 0.269
H/W = (P+C)/W+0.02 = 0.743
P/H = 0.611 C/H = 0.362
Vol./W^3 = 0.379
Gram Book 1 - It helps if you cut in a temporary girdle P4(G) and P6(G)in a preform L/W=1.20 rectangle. Then cut P1,P2,P3 to center point and adjust the girdle if need be. The P8's cut fast, light to medium material 1-6cts. Cut in refractive index 1.62 to 1.76 (85%) with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
