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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Monocerotis
By: Dan Starr
Cutting Instructions

Or try this version which is more efficient.

Monocerotis GemBob
Pavilion
P1
42.00°
96-06-12-18-24-30-36-42-48-54-60-66-72-78-84-90
Cut to center point.                                                                                      
P2(G)
90.00°
96-06-12-18-24-30-36-42-48-54-60-66-72-78-84-90
Cut to meet P1.                                                                                            
P3
41.00°
09-21-33-45-57-69-81-93                                       
Cut to center point.                                                                                      
Crown
C1
33.00°
96-48                                                                   
Cut to form girdle.                                                                                        
C2
32.50°
06-18-30-42-54-66-78-90                                   
Cut to form girdle.                                                                                        
C3
32.00°
12-36-60-84                                                         
Cut to form girdle.                                                                                        
C4
34.00°
24-72                                                                   
Cut to form girdle.                                                                                        
C5
27.50°
15-33-63-81                                                         
Cut to form girdle.                                                                                        
C6
16.10°
96-48                                                                   
Cut to meet C2 & C3.                                                                                  
C7
16.20°
24-72                                                                    
Cut to meet C2 & C4.                                                                                  
T
0°
Table                                                                    
Cut to meet C5.                                                                                            
Monocerotis - Designed by Dan Starr © 2006
Angles are for R.I = 1.54
49 Facets  +  16 Girdle Facets  =  65  Total Facets
8-fold radial symmetry
96  Index
L/W = 1.000  T/W = 0.379  U/W = 0.260  P/W = 0.443  C/W = 0.146
Volume/W e3  =  0.199
Cutting Remarks  -  This is a very bright design, so it would probably wash out a stone with pale coloring.  It's a very
easy design to cut without low angles to worry about. These angles work without changes from R.I. of 1.54 to 2.17.
Brightness Table
R.I.
Iso %
Cos %
1.54
94.9
90.2
1.62
94.4
88.5
1.76
93.0
84.5
1.96
89.1
78.4
2.17
88.0
74.6
Monocerotis cut in Synthetic Amethyst