Standard report for brilliant

General information

Model Simple
Expert name Makoed A.G.
Report date 10.03.2008
Real weight, ct
Calculated weight, ct 0.73, 0.7361
Appraiser title GIA_PCTG_StarCul
Overall cut quality E
Symmetry appraiser title Internal
Overall symmetry quality VG
Spread 0.01 ct, 1.10%
AGS Spread N/A ct, N/A%
Measurements 5.841 (5.835-5.846) x 3.547 / 0.002 mm
Girdle to MIC 0.002 mm
Extra Facet / Nat No
 

Average values, mm

Diameter 5.841
Crown height 0.833
Pavilion depth 2.528
Total height 3.547
Table 3.333
Culet 0.024
Girdle Bezel 0.187
Girdle Bone 0.189
Girdle Valley 0.092

 

Parameter

Avg

Min

Max

Dev

Cut

Sym

1

2

3

4

5

6

7

8

Diameter, mm 5.841 5.835 5.846 0.18% E EX 5.840 5.845 5.840 5.842        
Crown angle, 33.53 33.36 33.68 0.32 Grading EX 33.53 33.68 33.66 33.62 33.60 33.36 33.38 33.40
Pavilion angle, 40.98 40.73 41.21 0.48 Grading EX 40.93 40.73 40.77 40.94 40.99 41.17 41.21 41.06
Total height, % 60.73       E                  
Crown height, % 14.26 14.06 14.41 0.35 E EX 14.40 14.41 14.37 14.29 14.20 14.06 14.07 14.25
Pavilion depth, % 43.28 43.14 43.41 0.27 N/A EX 43.24 43.19 43.14 43.32 43.26 43.41 43.40 43.29
Table, % 57.06 56.96 57.18 0.21 Grading EX 56.96 57.18 57.10 57.00        
Culet, % 0.41 0.36 0.45 0.09 E EX                
Girdle Bezel, % 3.19 3.08 3.27 0.19 E EX 3.08 3.13 3.22 3.12 3.27 3.27 3.26 3.19
Girdle Bone, % 3.23 2.96 3.52 0.55   EX 3.21 3.20 3.02 3.35 3.39 3.52 3.24 2.96
Girdle Valley, % 1.57 1.34 1.74 0.41 E EX 1.42 1.45 1.54 1.61 1.49 1.42 1.54 1.72
1.74 1.71 1.70 1.73 1.63 1.54 1.51 1.34
Star:
Upper ratio, %
55.01: 54.07: 56.09: 2.02     54.07: 56.09: 54.97: 54.92: 55.20: 55.27: 54.32: 55.24:
44.99 45.93 43.91 45.93 43.91 45.03 45.08 44.80 44.73 45.68 44.76
Star angle, 21.88 21.58 22.27 0.69   EX 21.89 22.27 21.83 21.65 21.58 21.97 21.72 22.15
Upper girdle angle, 40.96 40.17 41.54 1.37   VG 40.63 40.96 41.23 41.43 41.08 41.25 41.05 40.90
40.98 41.34 40.17 40.48 40.67 40.71 40.90 41.54
Lower girdle angle / Halves angle, 42.06 41.80 42.31 0.51   EX 41.95 41.87 41.80 41.83 41.95 42.06 42.03 42.03
42.11 42.20 42.30 42.31 42.21 42.16 42.05 42.04
Twist, 0.58 0.06 1.36 1.29   VG 0.83 0.13 0.23 0.23 0.06 0.89 0.89 1.36
Crown height, mm 0.833 0.821 0.842 0.021 E EX 0.841 0.842 0.839 0.835 0.829 0.821 0.822 0.832
Pavilion depth, mm 2.528 2.520 2.535 0.016 N/A EX 2.526 2.522 2.520 2.530 2.527 2.535 2.535 2.529
Table, mm 3.333 3.327 3.339 0.012 Grading EX 3.327 3.339 3.335 3.329        
Culet, mm 0.024 0.021 0.026 0.005 E EX                
Girdle Bezel, mm 0.187 0.180 0.191 0.011 E EX 0.180 0.183 0.188 0.182 0.191 0.191 0.190 0.186
Girdle Bone, mm 0.189 0.173 0.205 0.032   EX 0.187 0.187 0.176 0.195 0.198 0.205 0.189 0.173
Girdle Valley, mm 0.092 0.078 0.102 0.024 E EX 0.083 0.085 0.090 0.094 0.087 0.083 0.090 0.101
0.102 0.100 0.099 0.101 0.095 0.090 0.088 0.078
Fish eye effect, 8.92 N/A                  
Culet through Crown Bezel, 12.89 N/A                  

Measurement as per OctoNus theory

Crown angle, 33.53 33.51 33.57 0.06     33.57 33.52 33.52 33.51        
Pavilion angle, 40.98 40.95 41.00 0.05     40.96 40.95 40.99 41.00        

 

Azimuths deviation from ideal,

1

2

3

4

5

6

7

8

Pavilion 0.00 0.40 0.08 0.77 0.72 0.14 0.14 -0.08
Lower girdle facets / Halves -0.15 -0.01 0.28 0.15 0.54 0.46 0.52 0.67
0.47 0.66 0.42 0.45 -0.01 0.19 -0.27 0.03
Crown 0.83 0.53 0.31 0.54 0.79 1.03 1.03 1.28
Upper girdle facets 0.28 0.37 0.41 -0.07 0.13 0.33 0.47 0.86
0.63 0.18 -0.03 1.29 0.79 0.94 1.06 -0.28
Star facets 1.07 1.64 0.92 0.92 1.41 1.36 1.75 1.87

 
Girdle center Culet center Table center

Offset

Girdle-Culet offset by table axis 0.24 0.22, % 0.014 0.013, mm
Girdle-Table offset by table axis 0.20 0.19, % 0.012 0.011, mm
Table-Culet offset by table axis 0.12 0.23, % 0.007 0.014, mm
Girdle to table-culet line offset 0.12, % 0.007, mm

Culet shift ratio by main diameter

 

Main diameter (avg) 5.841, 100%
Width-wise culet shift ratio 2.918 mm, 49.96 % 2.922 mm, 50.04 %
Lengh-wise culet shift ratio 2.907 mm, 49.77 % 2.933 mm, 50.22 %

Paint / Dug

Avg

Type

Sym

Max

Dev

Sym

Crown painting, 0.01 EX 1.10 2.17 EX
Crown painting, notches 0.0, Negligible 0.3 0.6
Pavilion painting, -0.05 EX -0.53 0.99 EX
Pavilion painting, notches 0.0, Negligible 0.1 0.3

Paint / Dug

1

2

3

4

5

6

7

8

Crown painting, -0.55 0.17 -0.12 0.37 -0.18 0.21 -0.07 -0.07
-0.16 0.85 -1.06 -0.26 -0.24 0.34 -0.22 1.10
Crown painting, notches 0.1 0.0 0.0 0.1 0.0 0.1 0.0 0.0
0.0 0.2 0.3 0.1 0.1 0.1 0.1 0.3
Pavilion painting, -0.15 0.41 -0.12 -0.07 0.46 0.31 -0.25 0.05
-0.25 -0.53 0.28 -0.31 -0.16 -0.26 -0.19 -0.03
Pavilion painting, notches 0.0 0.1 0.0 0.0 0.1 0.1 0.1 0.0
0.1 0.1 0.1 0.1 0.0 0.1 0.1 0.0

 
Cut parameters description

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