by Jeff Graham
Quartz (Amethyst, Citrine, Ametrine, Smokey, Rose)
Hope’s Square (QTZ39.JRG)
By Jeff R. Graham
Copyright 1994
75% Light Return
Angles for R.I. = 1.54
53 facets + 12 facets on girdle = 65
4-fold, mirror-image symmetry
96 index
L/W = 1.000 T/W = 0.505 T/L = 0.505
P/W = 0.460 C/W = 0.226
H/W = (P+C)/W+0.02 = 0.706
P/H = 0.651 C/H = 0.320
Vol./W^3 = 0.279
Addition # 1 – This design is a little harder to cut than it looks, so watch the meets. It has nice flash and is not that hard to cut (for a modified square). Cut in refractive indexes 1.54 to 1.93 (85%) with no changes. It makes a nice stone in light to medium material, 1-6cts.
Random – Cosine – ISO
This article is by the late Jeff Graham. It is part of a special series of Archived Information from Gram Faceting.
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