Crystal: 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".
By Jeff R. Graham
90.6% Light Return
Angles for R.I. = 1.54
27 facets + 8 facets on girdle = 35
2-fold, mirror-image symmetry
L/W = 1.497 T/W = 0.351 T/L = 0.235
P/W = 0.451 C/W = 0.205
H/W = (P+C)/W+0.02 = 0.675
P/H = 0.667 C/H = 0.303
Vol./W^3 = 0.505
Addition # 6 - This is made for those rather narrow long Tourmaline crystals. This is good for dark ends and darker colors. I left it in refractive index 1.54 for Quartz, although I usually use this design for Tourmaline. The L/W of this can float longer or shorter without causing any problems.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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