Cutting Instructions
I attempt to accurately represent and describe cut stones and rough
as to appearance, size, origin and fully disclose any known
treatments in its description. Because you view the images on a
different monitor with different settings, color is particularly fickle
to represent, but I do my best.
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Beryl's Beryl
By: Dan Starr
Cutting Instructions
Beryl's Beryl cut in Heliodor
1.37 ct  - 7.6 mm x 4.8 mm
Brightness Table
R.I.
Iso %
Cos %
1.54
93.3
86.1
1.62
92.1
83.1
1.76
86.6
76.8
1.96
84.7
70.2
2.17
81.5
66.2
Pavilion
P1
42.00°
120-008-016-024-032-040-048-056-064-072-080
-088-096-104-112
Cut to center point.                                                                                            
P2(G)
90.00°
120-008-016-024-032-040-048-056-064-072-080
-088-096-104-112
Cut to meet P1.                                                                                                  
P3
40.50°
006-010-030-034-054-058-078-082-102-106      
Cut to meet P2(G).                                                                                             
Crown
C1
38.00°
120-008-016-024-032-040-048-056-064-072-080
-088-096-104-112
Cut to establish the girdle.                                                                                 
C2
32.87°
012-036-060-084-108                                           
Cut to meet the girdle.                                                                                       
C3
30.80°
004-020-028-044-052-068-076-092-100-116       
Cut to meet the girdle.                                                                                       
C4
26.71°
120-024-048-072-096                                            
Cut to meet C1.                                                                                                 
T
0°
Table                                                                     
Cut to meet C2.                                                                                                 
Beryl's Beryl - Designed by Dan Starr © 2008
Angles are for R.I = 1.59
61 Facets  +  15 Girdle Facets  =  76  Total Facets
5-fold radial symmetry
120  Index
L/W = 1.006  T/W = 0.474  U/W = 0.451  P/W = 0.429  C/W = 0.166
Volume/W e3  =  0.209
This design is very easy to cut and results in an unusual pentagon shaped table.  It's named after a
woman named Beryl.  I mean, how could you resist!?