Tejas: Faceting Design Diagram
Successful tips, details and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Tejas".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
By Jeff R. Graham
92% Light Return
Angles for R.I. = 1.62
51 facets + 10 facets on girdle = 61
5-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.200 T/L = 0.200 P/W = 0.384 C/W = 0.257
H/W = (P+C)/W+0.02 = 0.661 P/H = 0.581 C/H = 0.389
Vol./W^3 = 0.198
Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is very bright and works best in medium saturated material. This is not hard to cut and the shallow dome makes an interesting effect.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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