Twist on “CH”: 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 "Twist on "CH" ".
Garnet (Pyrope, Rhodolite, Almandine, Spessartite, Grossular, Demantoid, Tsavorite)
Twist on "CH" (GNETA5.JRG)
By Jeff R. Graham
Copyright 1997
78% Light Return
Angles for R.I. = 1.73
32 facets + 8 facets on girdle = 40
4-fold symmetry
96 index
L/W = 1.000 P/W = 0.446 C/W = 0.229
H/W = (P+C)/W+0.02 = 0.695
P/H = 0.641 C/H = 0.330
Vol./W^3 = 0.256
Addition # 2 - This is a nice change and is simple to cut. It is a little different twist on one of my early designs that a lot of cutters have told me they wanted more of. Cut in lighter material, 1/2-6cts. This works well in man-made Sapphire, YAG, and Spinel.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
