Standard report for brilliant

General information

Model Simple
Expert name Makoed A.G.
Report date 17.04.2008
Real weight, ct
Calculated weight, ct 0.75, 0.7555
Appraiser title GIA_PCTG_StarCul
Overall cut quality V
Symmetry appraiser title Internal
Overall symmetry quality EX
Spread -0.01 ct, -1.02%
AGS Spread N/A ct, N/A%
Measurements 5.852 (5.842-5.861) x 3.671 / 0.001 mm
Girdle to MIC 0.001 mm
Extra Facet / Nat No
 

Average values, mm

Diameter 5.852
Crown height 0.860
Pavilion depth 2.649
Total height 3.671
Table 3.358
Culet 0.018
Girdle Bezel 0.162
Girdle Bone 0.164
Girdle Valley 0.068

 

Parameter

Avg

Min

Max

Dev

Cut

Sym

1

2

3

4

5

6

7

8

Diameter, mm 5.852 5.842 5.861 0.32% E EX 5.856 5.858 5.853 5.855        
Crown angle, 34.52 34.40 34.65 0.25 Grading EX 34.65 34.61 34.43 34.40 34.42 34.49 34.53 34.60
Pavilion angle, 42.22 42.06 42.34 0.28 Grading EX 42.06 42.20 42.34 42.34 42.25 42.23 42.22 42.09
Total height, % 62.73       E                  
Crown height, % 14.70 14.52 14.91 0.38 E EX 14.91 14.79 14.60 14.56 14.52 14.64 14.73 14.84
Pavilion depth, % 45.26 45.04 45.45 0.41 N/A EX 45.04 45.26 45.40 45.45 45.37 45.29 45.21 45.06
Table, % 57.38 57.35 57.43 0.08 Grading EX 57.38 57.43 57.35 57.35        
Culet, % 0.31 0.22 0.38 0.16 E EX                
Girdle Bezel, % 2.76 2.68 2.83 0.15 E EX 2.79 2.68 2.73 2.72 2.82 2.79 2.76 2.83
Girdle Bone, % 2.81 2.72 2.89 0.18   EX 2.77 2.79 2.78 2.89 2.87 2.72 2.83 2.82
Girdle Valley, % 1.17 1.04 1.28 0.25 E EX 1.11 1.04 1.10 1.19 1.19 1.04 1.12 1.22
1.28 1.27 1.26 1.12 1.18 1.09 1.22 1.23
Star:
Upper ratio, %
55.37: 54.68: 55.92: 1.24     55.73: 54.68: 55.10: 55.68: 55.92: 55.16: 55.42: 55.30:
44.63 45.32 44.08 44.27 45.32 44.90 44.32 44.08 44.84 44.58 44.70
Star angle, 22.61 22.32 22.81 0.49   EX 22.81 22.63 22.32 22.55 22.65 22.44 22.65 22.80
Upper girdle angle, 41.99 41.63 42.32 0.69   EX 42.04 42.32 41.82 41.63 41.88 41.87 42.08 41.99
41.87 41.83 41.98 42.30 41.76 42.13 42.17 42.15
Lower girdle angle / Halves angle, 43.32 43.12 43.46 0.34   EX 43.20 43.28 43.32 43.40 43.44 43.46 43.39 43.35
43.32 43.32 43.34 43.39 43.31 43.29 43.12 43.12
Twist, 0.47 0.10 1.07 0.98   EX 0.33 0.36 0.23 0.10 0.44 1.07 0.75 0.49
Crown height, mm 0.860 0.850 0.872 0.022 E EX 0.872 0.866 0.854 0.852 0.850 0.857 0.862 0.868
Pavilion depth, mm 2.649 2.636 2.660 0.024 N/A EX 2.636 2.648 2.657 2.660 2.655 2.651 2.646 2.637
Table, mm 3.358 3.356 3.361 0.005 Grading EX 3.358 3.361 3.356 3.356        
Culet, mm 0.018 0.013 0.022 0.009 E EX                
Girdle Bezel, mm 0.162 0.157 0.166 0.009 E EX 0.163 0.157 0.160 0.159 0.165 0.163 0.161 0.166
Girdle Bone, mm 0.164 0.159 0.169 0.010   EX 0.162 0.163 0.163 0.169 0.168 0.159 0.166 0.165
Girdle Valley, mm 0.068 0.061 0.075 0.014 E EX 0.065 0.061 0.064 0.070 0.070 0.061 0.066 0.071
0.075 0.074 0.074 0.065 0.069 0.064 0.072 0.072
Fish eye effect, 13.85 N/A                  
Culet through Crown Bezel, 9.79 N/A                  

Measurement as per OctoNus theory

Crown angle, 34.52 34.48 34.55 0.07     34.53 34.55 34.48 34.50        
Pavilion angle, 42.22 42.16 42.28 0.12     42.16 42.22 42.28 42.22        

 

Azimuths deviation from ideal,

1

2

3

4

5

6

7

8

Pavilion 0.00 0.52 0.21 0.21 0.09 -0.47 -0.18 -0.02
Lower girdle facets / Halves 0.14 0.27 0.25 0.50 0.24 0.43 0.15 0.24
-0.09 -0.19 -0.15 -0.39 -0.13 -0.36 -0.12 0.11
Crown 0.33 0.16 -0.01 0.31 0.53 0.60 0.56 0.47
Upper girdle facets -0.16 -0.09 -0.30 0.61 -0.07 0.64 0.43 0.57
0.16 0.62 0.29 0.13 0.07 0.59 0.46 0.35
Star facets 0.48 0.18 0.19 0.44 0.68 0.93 0.95 0.73

 
Girdle center Culet center Table center

Offset

Girdle-Culet offset by table axis 0.03 0.22, % 0.002 0.013, mm
Girdle-Table offset by table axis 0.19 0.19, % 0.011 0.011, mm
Table-Culet offset by table axis 0.16 0.24, % 0.009 0.014, mm
Girdle to table-culet line offset 0.16, % 0.009, mm

Culet shift ratio by main diameter

 

Main diameter (avg) 5.852, 100%
Width-wise culet shift ratio 2.928 mm, 50.03 % 2.929 mm, 50.05 %
Lengh-wise culet shift ratio 2.928 mm, 50.03 % 2.925 mm, 49.99 %

Paint / Dug

Avg

Type

Sym

Max

Dev

Sym

Crown painting, -0.16 EX -0.62 1.06 EX
Crown painting, notches 0.0, Negligible 0.2 0.3
Pavilion painting, -0.02 EX 0.34 0.63 EX
Pavilion painting, notches 0.0, Negligible 0.1 0.2

Paint / Dug

1

2

3

4

5

6

7

8

Crown painting, -0.49 0.25 -0.47 -0.62 -0.06 -0.33 0.12 -0.04
-0.37 -0.02 -0.31 0.44 -0.50 -0.12 -0.01 -0.02
Crown painting, notches 0.1 0.1 0.1 0.2 0.0 0.1 0.0 0.0
0.1 0.0 0.1 0.1 0.1 0.0 0.0 0.0
Pavilion painting, 0.14 0.25 -0.27 -0.29 0.03 -0.22 -0.05 -0.15
-0.19 -0.28 0.33 0.21 0.06 0.34 -0.09 -0.11
Pavilion painting, notches 0.0 0.1 0.1 0.1 0.0 0.1 0.0 0.0
0.0 0.1 0.1 0.1 0.0 0.1 0.0 0.0

 
Cut parameters description

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