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

Borderland (MIR64.JRG)
By Jeff R. Graham
Copyright 2005
88.6% Light Return
Angles for R.I. = 1.54
26 facets + 5 facets on girdle = 31
5-fold, mirror-image symmetry
80 index
L/W = 1.051 T/W = 0.213 T/L = 0.203 P/W = 0.389
C/W = 0.238 H/W = (P+C)/W+0.02 = 0.646 P/H = 0.601 C/H = 0.368 Vol./W^3 = 0.200

Addition # 10 - Cut in refractive indexes 1.54 to 2.14 with no changes. This works best in a large stone and is a classic example of less is more. Give it a try in light to medium saturated material. Note: By varying C2 the star effect can be adjusted, there is no meet. On a small stone the table can be left off.

 

 

 

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