H&H Crown Rectangle: Faceting Design Diagram
Tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "H&H Crown Rectangle".0
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
H&H Crown Rectangle (TLINE5.JRG)
By Jeff R. Graham
70.5% Light Return
Angles for R.I. = 1.62
43 facets + 12 facets on girdle = 55
2-fold, mirror-image symmetry
L/W = 1.450 T/W = 0.712 T/L = 0.491
P/W = 0.440 C/W = 0.212
H/W = (P+C)/W+0.02 = 0.673
P/H = 0.655 C/H = 0.315
Vol./W^3 = 0.373
Gram Book 1 - This design is good for rectangular material and gives a much better light return than the 70.5% that ray traced. It can be cut in another order. It's not hard to cut and works well in light to med material, this works well in Topaz.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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