Plus-X Zircon: 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 "Plus-X Zircon".
Zircon (Hyacinth, Starlite)
Plus-X Zircon (ZIRCON13.JRG)
By Jeff R. Graham
Copyright 1994
82.8% Light Return
Angles for R.I. = 1.93
145 facets + 20 facets on girdle = 165
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.433 T/L = 0.433
P/W = 0.440 C/W = 0.218
H/W = (P+C)/W+0.02 = 0.678
P/H = 0.648 C/H = 0.322
Vol./W^3 = 0.277
Addition # 3 - Lots of work, this design is NOT for the timid. It should be cut large in light material. Watch the C11 facets, they are not cut to center point, they meet C9, C10 at the intersect, 2-16cts. CZ will work.
Random - Cosine - ISO
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
