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.
Corporal
By: Dan Starr
Cutting Instructions
Corporal cut in Canary Yellow High Zircon
3.75 ct  - 8.2 mm x 8.5 mm 5.65 mm
Brightness Table
R.I.
Iso %
Cos %
1.54
N/A
N/A
1.62
94.1
86.6
1.76
92.8
82.7
1.96
90.1
78.1
2.17
89.4
75.9
Corporal - Designed by Dan Starr © 2007
Angles are for R.I = 1.76
73 Facets  +  12 Girdle Facets  =  85  Total Facets
6-fold mirror-image symmetry
96 Index
L/W = 1.039  T/W = 0.498  U/W = 0.432  P/W = 0.430  C/W = 0.154
Volume/W e3  =  0.212
Cutting Remarks  -  The only real difficulty in cutting this design is making sure you get the spiral set correctly for the
crown.  Cutting C4 and C5 is like cutting another girdle set.  You can go round from any starting point, and alternate between
the tiers, or you can guestimate the C4 sets and then fill in C5.  These angles work without changes from R.I. of 1.59 to 2.17.
 I also have a set of angles optimized for high zircon.  If you're interested, drop me a line.
Pavilion
P1
41.50°
96-16-32-48-64-80                                             
Cut to center point.                                                                                      
P2
40.41°
08-24-40-56-72-88                                             
Cut to the same center point.                                                                       
P3(G)
90.00°
96-16-32-48-64-80                                             
Cut to establish the girdle.                                                                            
P4(G)
90.00°
08-24-40-56-72-88                                             
Cut to establish the girdle and meet P1.                                                       
P5
39.20°
04-12-20-28-36-44-52-60-68-76-84-92             
Cut to meet the girdle and form new center point.                                      
Crown
C1
37.50°
96-16-32-48-64-80                                             
Cut to establish the girdle.                                                                            
C2
36.00°
08-24-40-56-72-88                                             
Cut to meet C1 and establish the girdle.                                                       
C3
32.00°
01-15-17-31-33-47-49-63-65-79-81-95             
Cut to meet the girdle.                                                                                   
C4
28.00°
02-14-18-30-34-46-50-62-66-78-82-94             
Cut a step 30-50% of the C2, C3 line length.                                               
C5
31.10°
08-24-40-56-72-88                                             
Cut to meet C3.                                                                                            
C6
16.50°
08-24-40-56-72-88                                             
Cut to meet C5.                                                                                            
T
0.00°
Table                                                                  
Cut to meet C4.                                                                                            
Cutting Instructions
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