Liana I
GemCad Ray Traces for RI = 1.63
Random Model Cosine Model ISO Model
Liana I
designed by Bob Keller
Designed for a high school graduation present for my niece Liana.
Angles for R.I. = 1.63 and up 61 facets + 10 facets on girdle = 71
2-fold, mirror-image symmetry 96 index
L/W = 1.911 T/W = 1.475 T/L = 0.772 P/W = 0.860 C/W = 0.154 H/W = (P+C)/W+0.02 = 1.034 P/H = 0.831 C/H = 0.149
Vol./W^3 = 0.833 Brightness at 0 degrees tilt for RI = 1.63
COS = 71.7 ISO = 80.3
Pavilion
a 43.00 03-09-15-21-27-33-39-45-51-57-63-69-75-81-87-93 Cut to temp centerpoint
g1 90.00 03-45-51-93 Establishes size
g2 90.00 21-27-69-75  
g3 90.00 24-72  
b1 75.00 21-27-69-75 Meet a.g1.g2
b2 75.83 24-72 Meet b1.g2.g3
c 42.09 96-48 Meet a.g1
d 41.67 12-36-60-84 Meet a.b1, c at culet
e 41.19 24-72 Meet a.b2, c.d at culet
Crown
1 45.00 03-45-51-93 Match g1
2 45.00 21-27-69-75 Match g2
3 45.00 24-72 Match g3
4 35.00 03-45-51-93 Match 1
5 35.00 21-27-69-75 Match 2
6 35.00 24-72 Match 3
7 25.00 03-45-51-93 Match 4
8 25.00 21-27-69-75 Match 5
9 25.00 24-72 Match 6
t 0.00   Table


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