Bright Square

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Bright Square



GemCad Ray Traces for RI = 1.54
Random Model Cosine Model ISO Model
Bright Square Designed by Designed David de Lisle May 1999 david@mindlink.net
Gemcad by Bruce MacLellan
Angles for R.I. = 1.54 29 facets + 4 facets on girdle = 33
4-fold, mirror-image symmetry 96 index
L/W = 1.000 T/W = 0.547 T/L = 0.547 P/W = 0.633 C/W = 0.137 H/W = (P+C)/W+0.02 = 0.791 P/H = 0.801 C/H = 0.174
Vol./W^3 = 0.401 Brightness at 0 degrees tilt for RI = 1.54 COS = 78.4 ISO = 84.1

Pavilion
P3 43.00 12-36-60-84 Cut to T.C.P.
G 90.00 96-24-48-72 Size the stone
P4 70.00 96-24-48-72 Cut in Barions
P1 42.00 96-24-48-72 Cut in by eye
P2 41.00 12-36-60-84 Meet P1
Crown
C1 35.00 96-24-48-72
C2 30.00 96-24-48-72
C3 25.00 96-24-48-72
T 0.00 Table



GemCad File