Standard report for brilliant

General information

Model N/A
Expert name N/A
Report date N/A
Real weight, ct N/A
Calculated weight, ct 0.76, 0.7672
Spread -0.04ct, -5.27 %
AGS Spread -0.04 ct, -5.61%
Measurements 5.798 (5.782-5.812) x 3.732 / 0.001 (mm)
MIC 5.781 mm
Girdle to MIC 0.001 mm
Extra Facet Girdle / Nat No
Extra Facet Crown No
Extra Facet Pavilion Yes (3)
 
Appraiser title GIA_PCTG_StarCul
Overall cut quality G
Symmetry appraiser title Internal
Overall symmetry quality VG
 
Width 5.782 mm
Length 5.812 mm
Diameter Minimum 5.782 mm
Diameter Maximum 5.812 mm
Ratio (L/W) 1.005
Girdle Ratio 1.005
Total height 3.732 mm, 64.38 %

 

 

Open 3D model by a free GemAdviser Software

Average values, mm

Diameter Crown height Pavilion depth Total height Table Culet Girdle Bezel Girdle Bone Girdle Valley
5.798 0.843 2.691 3.732 3.421 0.040 0.198 0.217 0.111

Parameter

Avg

Min

Max

Dev

Cut

Sym

1

2

3

4

5

6

7

8

Diameter, mm 5.798 5.782 5.812 0.53% E EX 5.798 5.806 5.804 5.796        
Radius, mm N/A 2.891 2.910 0.019     2.901 2.906 2.908 2.898 2.897 2.900 2.895 2.897
Radius, % N/A 49.86 50.19 0.34     50.03 50.13 50.16 49.98 49.97 50.01 49.93 49.96
Crown angle, 35.27 35.14 35.55 0.42 Grading EX 35.21 35.21 35.55 35.14 35.28 35.35 35.23 35.22
Pavilion angle, 43.04 42.95 43.12 0.17 Grading EX 42.95 43.07 43.12 43.11 43.08 43.03 43.01 42.98
Crown height, % 14.53 14.40 14.67 0.27 E EX 14.40 14.51 14.64 14.47 14.54 14.52 14.52 14.67
Crown height bone, % N/A 14.08 14.61 0.53     14.35 14.17 14.08 14.22 14.36 14.32 14.61 14.19
Pavilion depth, % 46.41 46.30 46.50 0.20 N/A EX 46.30 46.47 46.50 46.37 46.38 46.39 46.44 46.47
Pavilion depth bone, % N/A 46.08 46.50 0.42     46.30 46.47 46.08 46.38 46.24 46.43 46.42 46.50
Table, % 59.00 58.66 59.13 0.46 Grading EX 59.11 59.10 59.13 58.66        
Culet, % 0.69 0.54 0.75 0.21 V EX                
Girdle Bezel, % 3.42 3.21 3.65 0.44 E EX 3.65 3.40 3.24 3.49 3.45 3.47 3.46 3.21
Girdle Bone, % 3.74 3.35 4.22 0.87   VG 3.72 3.74 4.22 3.78 3.78 3.63 3.35 3.69
Girdle Valley, % 1.92 1.49 2.35 0.87 E EX 2.11 1.91 1.87 1.91 1.98 2.22 1.98 2.14
1.98 1.91 1.73 2.02 1.49 1.62 1.56 2.35
Star:
Upper ratio, %
48.97: 48.29: 50.30: 2.01     49.08: 48.37: 48.40: 49.57: 49.35: 50.30: 48.29: 48.40:
51.03 51.71 49.70 50.92 51.63 51.60 50.43 50.65 49.70 51.71 51.60
Star angle, 21.10 20.59 21.42 0.83   EX 21.09 21.20 20.59 20.75 21.41 21.42 21.12 21.20
Upper girdle facet angle, 41.64 41.48 41.76 0.29   EX 41.48 41.57 41.48 41.58 41.67 41.57 41.68 41.61
41.70 41.76 41.69 41.76 41.71 41.73 41.67 41.53
Lower girdle facet angle, 44.16 43.97 44.30 0.32   EX 43.97 44.06 44.29 44.27 44.17 44.12 44.28 44.30
44.01 44.06 44.22 44.12 44.20 44.05 44.25 44.17
Depth Girdle Facet, % 79.99 78.77 81.25 2.48 E EX 79.53 80.06 79.83 79.27 80.40 80.50 80.24 80.48
81.25 79.62 80.04 79.58 78.77 79.82 80.33 80.14
Length Girdle Facet, % 78.29 77.01 79.56 2.55 E EX 77.96 78.50 78.14 77.58 78.85 78.95 78.50 78.74
79.56 77.92 78.15 77.68 77.01 78.07 78.59 78.40
Twist, 0.46 0.08 0.83 0.75   EX 0.63 0.08 0.14 0.54 0.25 0.82 0.83 0.41
Crown height, mm 0.843 0.835 0.850 0.016 E EX 0.835 0.841 0.849 0.839 0.843 0.842 0.842 0.850
Crown height bone, mm N/A 0.816 0.847 0.031     0.832 0.821 0.816 0.825 0.832 0.830 0.847 0.823
Pavilion depth, mm 2.691 2.685 2.696 0.011 N/A EX 2.685 2.694 2.696 2.688 2.689 2.689 2.692 2.694
Pavilion depth bone, mm N/A 2.672 2.696 0.024     2.685 2.694 2.672 2.689 2.681 2.692 2.692 2.696
Table, mm 3.421 3.401 3.428 0.027 Grading EX 3.427 3.427 3.428 3.401        
Culet, mm 0.040 0.031 0.044 0.012 V EX                
Girdle Bezel, mm 0.198 0.186 0.212 0.025 E EX 0.212 0.197 0.188 0.203 0.200 0.201 0.201 0.186
Girdle Bone, mm 0.217 0.194 0.245 0.051   VG 0.216 0.217 0.245 0.219 0.219 0.210 0.194 0.214
Girdle Valley, mm 0.111 0.086 0.136 0.050 E EX 0.122 0.111 0.108 0.111 0.115 0.129 0.115 0.124
0.115 0.111 0.100 0.117 0.086 0.094 0.090 0.136
Fish eye effect, 16.22 N/A                  
Kozibe, 8.66 N/A                  

Measurement as per OctoNus theory

Crown angle, 35.27 35.18 35.39 0.21     35.24 35.28 35.39 35.18        
Pavilion angle, 43.04 43.01 43.07 0.05     43.01 43.05 43.07 43.04        

Azimuths deviation from ideal,

1

2

3

4

5

6

7

8

Pavilion 0.00 0.04 -0.09 -0.11 -0.28 -0.61 -0.65 -0.52
Lower girdle facets / Halves -0.25 0.21 0.09 0.01 -0.27 0.12 -0.16 -0.43
-0.51 -0.41 -0.38 -0.63 -0.49 -0.58 -0.20 -0.23
Crown 0.63 0.12 0.05 0.43 -0.03 0.21 0.18 -0.12
Upper girdle facets 0.14 0.37 -1.16 1.34 -1.01 1.25 -0.35 0.74
-1.14 0.21 -1.10 0.03 -0.58 -0.46 -1.03 1.35
Star facets 2.65 2.50 2.89 2.03 1.87 1.74 2.60 1.71

Facets' slope angles

 

Facets' azimuth angles

 

Girdle facets' angles & azimuths

 

  Girdle center Culet center Table center MIC center

Offset by table axis

Girdle-Culet offset by table axis 0.18 0.22, % 0.010 0.012, mm
Girdle-Table offset by table axis 0.16 0.19, % 0.009 0.011, mm
Table-Culet offset by table axis 0.11 0.23, % 0.007 0.013, mm
Girdle to table-culet line offset 0.11, % 0.007, mm
 

Culet shift ratio by main diameter

Main diameter (avg) 5.798 mm, 100%
Width-wise culet shift ratio 2.894 mm, 49.92 % 2.904 mm, 50.10 %
Lengh-wise culet shift ratio 2.905 mm, 50.10 % 2.899 mm, 50.00 %

Girdle asymmetry

  Recommendation for girdle
asymmetry removing
 
 
 

Paint / Dug

Avg

Type

Sym

Max

Dev

Sym

Crown painting, -0.69 Painting EX -1.30 1.65 EX
Crown painting, notches 0.2, Very small 0.3 0.4
Pavilion painting, -0.01 EX 0.32 0.58 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 -0.24 -1.29 -1.30 -1.06 -0.81 -0.78 -0.77
-1.11 -0.00 -1.30 0.15 -0.76 0.35 -0.91 -0.72
Crown painting, notches 0.1 0.1 0.3 0.3 0.3 0.2 0.2 0.2
0.3 0.0 0.3 0.0 0.2 0.1 0.2 0.2
Pavilion painting, -0.25 -0.16 0.05 -0.10 -0.18 -0.23 -0.04 0.15
-0.23 -0.21 0.23 -0.02 0.16 0.06 0.32 0.23
Pavilion painting, notches 0.1 0.0 0.0 0.0 0.0 0.1 0.0 0.0
0.1 0.1 0.1 0.0 0.0 0.0 0.1 0.1

Cut parameters description