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 users can download a zipped .gem design file for Bright Square: bright_square.zip.

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