Glitter Squared #2: Faceting Design Diagram
Helpful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Glitter Squared #2".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Glitter Squared #2 (MC106.JRG)
By Jeff R. Graham
90% Light Return
Angles for R.I. = 1.62
121 facets + 4 facets on girdle = 125
4-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.418 T/L = 0.418 P/W = 0.620
C/W = 0.231 H/W = (P+C)/W+0.02 = 0.871 P/H = 0.712 C/H = 0.265 Vol./W^3 = 0.443
Addition # 12 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is designed to be a large stone and it works well in light to medium saturations. This is not hard to cut, but does takes some experience.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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