Z-Diamonds: Faceting Design Diagram

Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)

Z-Diamonds - Reflector (MC13.JRG)
By Jeff R. Graham
Copyright 1999
90.7% Light Return
Angles for R.I. = 1.54
13 facets + 4 facets on girdle = 17
2-fold symmetry
96 index
L/W = 1.500 T/W = 0.892 T/L = 0.595
P/W = 0.500 C/W = 0.254
H/W = (P+C)/W+0.02 = 0.774
P/H = 0.646 C/H = 0.328
Vol./W^3 = 0.651

Addition # 4 - This is a neat one when it flashes. I find it works well in about any material, I like it in a little bit larger size. It cut easy and fast and is designed to give a nice color flash when rocked on the long axis. It works well in Tourmaline and Topaz. Cut this in R.I. 1.54 to 1.76 without changes.

Random - Cosine - ISO

Detailed faceting instructions by Jeff Graham available at The Rock Peddler