HELIUM POLISH REPORT
Brilliant

General information

Model Simple
Expert name Makoed A.G.
Report date 18.07.2006
Real weight, ct  
Calculated weight, ct 0.54, 0.5484
Spread 0.01 ct, 1.33%
Measurements, mm 5.287 (5.277-5.296) x 3.223 / 0.008
Appraiser title HRD
Overall cut quality Good
Overall symmetry quality FR
Extra Facet / Nat No
Girdle to MIC, mm 0.008
 

Average values

Total height, mm 3.223
Crown height, mm 0.813
Pavilion depth, mm 2.245
Table, mm 2.876
Culet, mm 0.129
Girdle Bezel, mm 0.164
Girdle Bone, mm 0.176
Girdle Valley, mm 0.089

 

Parameter

Avg

Min

Max

Dev

Cut

Sym

1

2

3

4

5

6

7

8

Diameter, mm 5.287 5.277 5.296 0.36% Very good EX 5.281 5.295 5.288 5.293        
Crown angle, 34.02 33.45 34.23 0.78 Very good EX 34.05 34.12 34.14 33.45 34.06 34.08 34.23 34.05
Pavilion angle, 40.56 40.44 40.66 0.21 Very good EX 40.44 40.53 40.55 40.55 40.55 40.64 40.60 40.66
Total height, % 60.97       Very good                  
Crown height, % 15.38 15.06 15.68 0.62 Very good EX 15.68 15.64 15.41 15.09 15.06 15.16 15.35 15.67
Pavilion depth, % 42.46 41.89 42.83 0.94 N/A EX 41.89 42.30 42.49 42.54 42.68 42.83 42.51 42.45
Table, % 54.40 53.99 54.72 0.73 Very good EX 54.22 54.72 54.66 53.99        
Culet, % 2.44 2.09 2.90 0.81 Good EX                
Girdle Bezel, % 3.11 2.78 3.35 0.57 Very good EX 3.32 2.97 3.07 3.35 3.24 2.98 3.15 2.78
Girdle Bone, % 3.33 2.98 3.76 0.78   EX 3.76 2.98 3.29 3.39 3.49 3.27 3.10 3.36
Girdle Valley, % 1.68 1.26 1.99 0.74 N/A EX 1.99 1.77 1.26 1.66 1.53 1.67 1.84 1.89
1.73 1.64 1.53 1.82 1.65 1.37 1.57 1.93
Star:
Upper ratio, %
49.52: 47.88: 50.88: 3.00     47.88: 48.63: 50.26: 50.29: 49.93: 48.73: 50.88: 49.51:
50.48 52.12 49.12 52.12 51.37 49.74 49.71 50.07 51.27 49.12 50.49
Star angle, 21.96 21.31 22.26 0.95   EX 22.10 21.68 21.31 22.03 22.16 22.04 22.26 22.09
Upper girdle angle, 39.50 38.20 40.74 2.54   GD 38.68 39.37 38.20 38.21 40.00 39.97 39.07 39.53
39.25 39.27 39.98 39.72 40.55 40.74 39.88 39.63
Lower girdle angle / Halves angle, 41.69 41.50 42.35 0.85   EX 41.52 41.54 42.35 42.19 41.63 41.55 41.59 41.54
41.66 41.69 41.69 41.62 41.63 41.76 41.63 41.50
Twist, 0.71 0.05 1.73 1.68   EX 0.33 1.07 0.05 0.37 0.63 0.82 0.66 1.73
Crown height, mm 0.813 0.796 0.829 0.033     0.829 0.827 0.815 0.798 0.796 0.802 0.811 0.828
Pavilion depth, mm 2.245 2.215 2.264 0.050     2.215 2.236 2.246 2.249 2.256 2.264 2.247 2.244
Table, mm 2.876 2.854 2.893 0.039 2.867 2.893 2.890 2.854        
Culet, mm 0.129 0.110 0.153 0.043                
Girdle Bezel, mm 0.164 0.147 0.177 0.030 0.175 0.157 0.162 0.177 0.171 0.157 0.167 0.147
Girdle Bone, mm 0.176 0.157 0.199 0.041   0.199 0.157 0.174 0.179 0.184 0.173 0.164 0.178
Girdle Valley, mm 0.089 0.066 0.105 0.039 0.105 0.094 0.066 0.088 0.081 0.089 0.097 0.100
0.092 0.087 0.081 0.096 0.087 0.072 0.083 0.102
Fish eye effect, 8.74 Very good                  
Culet through Crown Bezel, 9.19 Very good                  

Measurement as per OctoNus theory

Crown angle, 34.02 33.75 34.18 0.43     34.05 34.10 34.18 33.75        
Pavilion angle, 40.56 40.49 40.60 0.11     40.49 40.58 40.57 40.60        

 

 
Girdle center Culet center Table center

Offset by table axis

Girdle-Culet 0.73 0.24, % 0.039 0.013, mm
Girdle-Table 0.42 0.21, % 0.022 0.011, mm
Table-Culet 0.63 0.25, % 0.033 0.013, mm

Azimuths deviation from ideal

1

2

3

4

5

6

7

8

Pavilion, 0.00 0.44 0.06 0.70 0.13 -0.25 -0.84 -0.82
Lower girdle facets / Pavilion Halves, -0.41 -0.45 3.96 -3.80 -0.32 -0.20 -0.33 -0.21
-0.18 -0.34 -0.57 -0.50 -0.66 -0.46 -0.76 -0.49
Crown, 0.33 -0.62 0.11 1.07 -0.50 0.57 -0.17 0.91
Upper girdle facets, -2.71 0.21 -3.87 3.01 -1.23 -0.43 -0.78 -0.05
-2.55 1.78 -0.31 1.10 0.08 0.05 -0.19 0.20
Star facets, 0.15 0.29 2.24 1.35 2.09 1.73 0.92 1.19

Painting

Avg

Max

Type

1

2

3

4

5

6

7

8

Crown, -1.09 -3.25 Painting -3.04 -0.83 -3.25 -2.90 -1.34 1.50 -1.86 -0.45
-2.04 -1.21 -0.88 -1.27 0.25 0.87 -1.11 0.13
Crown, notches 0.3, Very small 0.9 0.8 0.2 0.9 0.8 0.4 0.4 0.5 0.1
0.5 0.3 0.2 0.3 0.1 0.2 0.3 0.0
Pavilion, 0.45 3.86 Digging -0.41 0.89 3.52 3.86 -0.38 0.90 -1.03 0.34
-0.30 0.08 -0.31 -0.34 0.18 -0.35 0.06 0.49
Pavilion, notches 0.1, Very small 1.0 0.1 0.2 0.9 1.0 0.1 0.2 0.3 0.1
0.1 0.0 0.1 0.1 0.0 0.1 0.0 0.1

 
Cut parameters description

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