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

Jeff Graham Facet Design Jeff Graham Facet Design

Magma (MIR69.JRG)
By Jeff R. Graham
Copyright 2005
91% Light Return
Angles for R.I. = 1.54
45 facets + 8 facets on girdle = 53
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.237 T/L = 0.237 P/W = 0.420
C/W = 0.244 H/W = (P+C)/W+0.02 = 0.684 P/H = 0.614 C/H = 0.357 Vol./W^3 = 0.221

PAVILION

CROWN

Addition # 10 – Cut in refractive indexes 1.54 to 2.14 with no changes. This is fairly easy to cut and has distinct flower-like reflections. Cut in light to medium saturations and I like it cut in 8mm or larger stones.

Jeff Graham Facet Design

Detailed faceting instructions by Jeff Graham available at The Rock Peddler