Malt Square: Faceting Design Diagram
Successful tips and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Malt Square".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Malt Square (B19.JRG)
By Jeff R. Graham
90.3% Light Return
Angles for R.I. = 1.62
53 facets + 8 facets on girdle = 61
4-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.612 T/L = 0.612
P/W = 0.522 C/W = 0.132
H/W = (P+C)/W+0.02 = 0.673
P/H = 0.775 C/H = 0.196
Vol./W^3 = 0.302
Addition # 5 - This cuts easy and works well in a medium colored material. It is not a high crown and works well with saturated materials. Cut this in R.I. 1.62 to 1.76 (86.5%) with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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