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
Copyright 1999
90.3% Light Return
Angles for R.I. = 1.62
53 facets + 8 facets on girdle = 61
4-fold, mirror-image symmetry
96 index
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
Jeff R. Graham
The late Jeff Graham was a prolific faceter, creator of many original faceting designs, and the author of several highly-regarded instructional faceting books such as Gram Faceting Designs.
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