Circus Star: Faceting Design Diagram
Detailed information and guide on Faceting Designs. A Faceting Design Diagram by Jeff R. Graham that presents various cuts, this one is called "Circus Star"
Tourmaline (Achroite, Dravite, Rubellite, Indicolite, Verdelite, Siberite)
Circus Star (DOME12.JRG)
By Jeff R. Graham
Copyright 2007
87.7% Light Return
Angles for R.I. = 1.62
73 facets + 8 facets on girdle = 81
8-fold symmetry
96 index
L/W = 1.000 T/W = 0.321 T/L = 0.321 P/W = 0.415
C/W = 0.350 H/W = (P+C)/W+0.02 = 0.785 P/H = 0.529 C/H = 0.446 Vol./W^3 = 0.310
PAVILION
CROWN
Addition # 13 - Cut in refractive indexes 1.62 to 2.14 with no changes. This is designed for lightly saturated rough and works best in pastel colors. I designed this for nodule shaped material.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
