Crystal Star: 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 Crystal Star.
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Crystal Star (B1.JRG)
By Jeff R. Graham
86% Light Return
Angles for R.I. = 1.62
52 facets + 6 facets on girdle = 58
3-fold, mirror-image symmetry
L/W = 1.073 T/W = 0.484 T/L = 0.451
P/W = 0.442 C/W = 0.188
H/W = (P+C)/W+0.02 = 0.650
P/H = 0.680 C/H = 0.289
Vol./W^3 = 0.247
Addition # 5 - This will work in R.I. 1.62 to 1.76 with no changes. I prefer it in a medium to light colored Tourmaline, which is what the shape is designed for… It is fast and easy to cut, it is really a "Money Cut".
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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