Uneven Swirl: 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 "Uneven Swirl".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Uneven Swirl (GNETP14.JRG)
By Jeff R. Graham
Copyright 1993
80.4% Light Return
Angles for R.I. = 1.73
43 facets + 6 facets on girdle = 49
6-fold symmetry
96 index
L/W = 1.155 T/W = 0.516 T/L = 0.447
P/W = 0.416 C/W = 0.193
H/W = (P+C)/W+0.02 = 0.629
P/H = 0.662 C/H = 0.306
Vol./W^3 = 0.254
Addition # 3 - This design is a little unusual to cut because the P3, P4, facets are not all meet point. Cut them a evenly as you can, they do cut to center point. This design works well in medium to light material, 1-8cts. Cut in refractive indexes 1.73 to 2.14 (81.5%)with no changes.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
