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, 0.7370
Appraiser title GIA_PCTG_StarCul
Overall cut quality E
Symmetry appraiser title Internal
Overall symmetry quality VG
Spread 0.01 ct, 1.11%
AGS Spread N/A ct, N/A%
Measurements 5.841 (5.835-5.845) x 3.551 / 0.001 mm
Girdle to MIC 0.001 mm
Extra Facet / Nat No
 

Average values, mm

Diameter 5.841
Crown height 0.842
Pavilion depth 2.529
Total height 3.551
Table 3.352
Culet 0.023
Girdle Bezel 0.180
Girdle Bone 0.180
Girdle Valley 0.085

 

Parameter

Avg

Min

Max

Dev

Cut

Sym

1

2

3

4

5

6

7

8

Diameter, mm 5.841 5.835 5.845 0.16% E EX 5.842 5.841 5.842 5.842        
Crown angle, 34.03 33.89 34.18 0.29 Grading EX 34.18 34.07 33.89 33.98 33.96 33.99 34.06 34.09
Pavilion angle, 40.98 40.79 41.12 0.33 Grading EX 40.79 40.93 41.12 41.06 41.11 40.99 40.94 40.92
Total height, % 60.80       E                  
Crown height, % 14.42 14.32 14.53 0.21 E EX 14.53 14.52 14.36 14.32 14.35 14.33 14.44 14.51
Pavilion depth, % 43.30 43.09 43.43 0.34 N/A EX 43.09 43.26 43.43 43.32 43.43 43.26 43.29 43.29
Table, % 57.38 57.35 57.41 0.06 Grading EX 57.40 57.37 57.35 57.41        
Culet, % 0.39 0.36 0.41 0.05 E EX                
Girdle Bezel, % 3.07 2.95 3.21 0.26 E EX 3.21 3.02 3.00 3.16 3.00 3.20 3.07 2.95
Girdle Bone, % 3.09 3.02 3.23 0.21   EX 3.04 3.02 3.23 3.04 3.18 3.11 3.04 3.03
Girdle Valley, % 1.45 1.28 1.65 0.38 E EX 1.63 1.43 1.31 1.28 1.48 1.65 1.47 1.39
1.43 1.58 1.63 1.38 1.34 1.31 1.39 1.49
Star:
Upper ratio, %
55.08: 54.03: 56.31: 2.28     54.03: 56.06: 54.66: 54.04: 55.38: 55.52: 56.31: 54.66:
44.92 45.97 43.69 45.97 43.94 45.34 45.96 44.62 44.48 43.69 45.34
Star angle, 22.14 21.87 22.35 0.48   EX 22.16 22.20 22.02 21.87 22.33 22.35 22.21 22.00
Upper girdle angle, 41.57 41.26 42.00 0.74   EX 41.50 41.71 41.42 41.48 41.43 41.36 41.32 41.80
41.39 41.46 41.26 41.83 41.79 42.00 41.82 41.61
Lower girdle angle / Halves angle, 42.07 41.86 42.22 0.36   EX 41.86 41.96 42.11 42.20 42.12 42.08 42.16 42.19
42.22 42.11 42.00 42.04 42.07 42.07 42.01 41.90
Twist, 0.40 0.15 0.75 0.60   EX 0.33 0.19 0.35 0.15 0.41 0.75 0.55 0.43
Crown height, mm 0.842 0.837 0.849 0.012 E EX 0.849 0.848 0.839 0.837 0.838 0.837 0.843 0.848
Pavilion depth, mm 2.529 2.517 2.537 0.020 N/A EX 2.517 2.527 2.537 2.530 2.537 2.527 2.529 2.529
Table, mm 3.352 3.350 3.353 0.003 Grading EX 3.353 3.351 3.350 3.353        
Culet, mm 0.023 0.021 0.024 0.003 E EX                
Girdle Bezel, mm 0.180 0.172 0.187 0.015 E EX 0.187 0.176 0.175 0.184 0.175 0.187 0.179 0.172
Girdle Bone, mm 0.180 0.177 0.189 0.012   EX 0.178 0.177 0.189 0.178 0.186 0.181 0.178 0.177
Girdle Valley, mm 0.085 0.075 0.097 0.022 E EX 0.095 0.084 0.077 0.075 0.086 0.097 0.086 0.081
0.083 0.092 0.095 0.081 0.078 0.076 0.081 0.087
Fish eye effect, 8.75 N/A                  
Culet through Crown Bezel, 12.36 N/A                  

Measurement as per OctoNus theory

Crown angle, 34.03 33.97 34.07 0.10     34.07 34.03 33.97 34.03        
Pavilion angle, 40.98 40.95 41.03 0.08     40.95 40.96 41.03 40.99        

 

Azimuths deviation from ideal,

1

2

3

4

5

6

7

8

Pavilion 0.00 -0.02 0.33 0.12 0.10 -0.48 -0.64 -0.10
Lower girdle facets / Halves 0.03 0.08 0.22 0.41 0.01 0.20 -0.10 -0.08
-0.31 -0.18 -0.53 -0.42 -0.29 -0.35 -0.06 -0.16
Crown 0.33 0.17 -0.03 0.27 0.51 0.27 -0.09 0.34
Upper girdle facets 0.26 -0.48 -0.44 0.25 0.29 0.35 0.00 -0.34
-0.16 0.42 -0.24 -0.41 -0.29 0.32 0.65 0.31
Star facets 0.95 1.09 1.10 1.14 0.99 0.92 1.02 0.89

 
Girdle center Culet center Table center

Offset

Girdle-Culet offset by table axis 0.11 0.22, % 0.007 0.013, mm
Girdle-Table offset by table axis 0.14 0.19, % 0.008 0.011, mm
Table-Culet offset by table axis 0.07 0.23, % 0.004 0.014, mm
Girdle to table-culet line offset 0.07, % 0.004, mm

Culet shift ratio by main diameter

 

Main diameter (avg) 5.841, 100%
Width-wise culet shift ratio 2.915 mm, 49.91 % 2.927 mm, 50.11 %
Lengh-wise culet shift ratio 2.923 mm, 50.05 % 2.919 mm, 49.98 %

Paint / Dug

Avg

Type

Sym

Max

Dev

Sym

Crown painting, -0.02 EX 0.85 1.52 EX
Crown painting, notches 0.0, Negligible 0.2 0.4
Pavilion painting, -0.03 EX -0.41 0.77 EX
Pavilion painting, notches 0.0, Negligible 0.1 0.2

Paint / Dug

1

2

3

4

5

6

7

8

Crown painting, -0.08 0.65 -0.61 -0.28 0.32 -0.08 -0.27 0.85
-0.67 -0.15 -0.51 0.32 -0.20 0.02 0.32 0.03
Crown painting, notches 0.0 0.2 0.2 0.1 0.1 0.0 0.1 0.2
0.2 0.0 0.1 0.1 0.1 0.0 0.1 0.0
Pavilion painting, 0.03 -0.10 0.24 -0.09 -0.32 -0.08 -0.22 0.18
-0.41 -0.30 -0.05 -0.22 0.36 0.25 0.04 0.16
Pavilion painting, notches 0.0 0.0 0.1 0.0 0.1 0.0 0.1 0.0
0.1 0.1 0.0 0.1 0.1 0.1 0.0 0.0

 
Cut parameters description

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