Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Screamer (MIR43.JRG)
By Jeff R. Graham
Copyright 2005
91.3% Light Return
Angles for R.I. = 1.54
32 facets + 8 facets on girdle = 40
8-fold, mirror-image symmetry
96 index
L/W = 1.000 P/W = 0.435 C/W = 0.278
H/W = (P+C)/W+0.02 = 0.732 P/H = 0.594 C/H = 0.379
Vol./W^3 = 0.235
PAVILION
CROWN
Random – Cosine – ISO
Addition # 10 – This works well in about any material, but it’s designed for lightly saturated materials. Cut in refractive indexes 1.54 to 1.73 with no changes. This is particularly nice in earrings and I like it in Tourmaline. A table can be cut on a large stone, leaving a C5 is a nice effect on smaller stones.
Detailed faceting instructions by Jeff Graham available at The Rock Peddler
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