Play Ball: Faceting Design Diagram
Successful tips,details and guide on Faceting Designs. Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Play Ball".
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Play Ball (CHECK77.JRG)
By Jeff R. Graham
85.8% Light Return
Angles for R.I. = 1.62
57 facets + 8 facets on girdle = 65
4-fold, mirror-image symmetry
L/W = 1.000 T/W = 0.350 T/L = 0.350
P/W = 0.431 C/W = 0.167
H/W = (P+C)/W+0.02 = 0.618
P/H = 0.698 C/H = 0.270
Vol./W^3 = 0.217
Addition # 8 - Cut this in refractive indexes 1.62 to 2.14 (90.2%) with no changes. This is pretty quick to cut and works well in about any material. I like it in medium colors.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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