Square Emerald 1

GemCad Ray Traces for RI = 1.54
Random Model Cosine Model 74.9 ISO Model 82.6
Square Emerald 1
A Simple Square Emerald / Step Cutting Tainer
Designed by Bob Keller 06-08-02 for Ryan Thompson
Angles for R.I. = 1.54 37 facets + 8 facets on girdle = 45
4-fold 96 index
L/W = 1.000 T/W = 0.540 T/L = 0.540 P/W = 0.502 C/W = 0.160 H/W = (P+C)/W+0.02 = 0.682 P/H = 0.736 C/H = 0.235
Vol./W^3 = 0.284 Brightness at 0 degrees tilt for
RI = 1.54 COS = 74.9 ISO = 82.6
Pavilion
a 42.00 04-12-20-28-36-44-52-60-68-76-84-92 Cut to culet point
g1 90.00 12-36-60-84 Match a, set size
g2 90.00 96-24-48-72 Meet a.a.g1
Crown
1 40.89 12-36-60-84 Match g1
2 44.00 96-24-48-72 Meet g1.g2.1
3 31.16 12-36-60-84 Match 1
4 34.00 96-24-48-72 Meet 1.2.3
5 21.76 12-36-60-84 Match 3
6 24.00 96-24-48-72 Meet 3.4.5
t 0.00 Table Level table
Cut as given in medium saturated amethyst, citrine, smoky or medium saturated colors of synthetic quartz.

The Square Emerald 1 design file is available for GemCad/GemPrint users.


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© Bob's Rock Shop Bob Keller