Illustrated report for brilliant

Polished Brilliant
Brilliant
12.09.2025
Model Shadow scan
Expert name N/A
Scale weight, ct 0.4
Corrected mass, ct 0.40, 0.4069
Measurements 4.790 (4.780-4.799) x 2.885 / 0.003 (mm)
Spread 0.00ct, -0.35 %
AGS Spread 0.00 ct, -0.48%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
4.780 mm 4.799 mm 1.004 4.780 mm 4.799 mm 4.790 mm 2.885 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
0.660 mm 2.043 mm 2.776 mm 0.026 mm 0.181 mm 0.177 mm 0.103 mm
Appraiser title GIA Facetware.Mfg
Overall cut quality VG
Symmetry appraiser title GIA Facetware.Mfg
Overall symmetry quality VG
Final grade VG
Model building info The model has small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 4.790 4.780 4.799 0.40% - EX
Radius, mm 2.394 2.388 2.401 0.014% – –
Crown angle, ° 33.21 33.15 33.27 0.12 VG EX
Pavilion angle, ° 40.63 40.46 40.74 0.28 VG EX
Total height, % 60.21 – – – - –
Crown height, % 13.78 13.64 14.10 0.46 - EX
Crown height bone, % 13.88 13.66 14.18 0.52 – –
Pavilion height, % 42.65 42.30 42.89 0.59 – –
Pavilion upperbone, % 42.65 42.37 42.87 0.50 – –
Table, % 57.95 57.57 58.18 0.61 VG EX
Culet, % 0.54 0.49 0.57 0.08 EX -
Girdle height bezel, % 3.79 3.67 3.89 0.22 VG EX
Girdle height bone, % 3.69 3.33 3.98 0.65 – -
Girdle height 2.16 1.63 2.48 0.84 - -
valley, %
Star: 49.79: 49.09: 51.81: 2.72 VG EX
Upper ratio, % 50.21 50.91 48.19
Star angle, ° 20.25 19.71 20.94 1.23 – EX
Upper girdle 40.14 39.22 41.75 2.53 – EX
angle, °
Length girdle 76.33 75.51 78.03 2.53 VG EX
facet, %
Lower girdle angle / 41.83 41.71 41.95 0.24 – EX
Halves angle, °
Facet Twist, ° 1.01 0.04 1.71 1.67 – -
Crown height, mm 0.660 0.653 0.675 0.022 - EX
Pavilion height, mm 2.043 2.026 2.054 0.028 – –
Table, mm 2.776 2.758 2.787 0.029 VG EX
Culet, mm 0.026 0.024 0.027 0.004 EX -
Girdle height bezel, mm 0.181 0.176 0.187 0.011 VG EX
Measurement as per OctoNus theory:
Crown angle, ° 33.21 33.19 33.23 0.03 – –
Pavilion angle, ° 40.63 40.57 40.68 0.11 – –
Fish eye effect, ° 6.99 – – – - –
Culet through Crown Bezel, ° 14.71 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.00 -0.18 -0.17 -0.27 0.00 0.10 0.11 0.24
Crown azimuths dev. from ideal 1.04 0.31 -0.21 1.37 1.70 1.61 0.86 1.18
Crown painting 0.73 -1.11 0.11 -0.72 0.37 -0.86 0.10 -2.82
0.84 -2.07 0.31 -1.46 -0.12 0.38 -0.37 0.64
Pavilion painting -0.14 -0.01 0.26 -0.45 0.14 -0.92 0.00 0.02
0.02 -0.12 0.16 0.05 0.14 0.21 -0.04 0.34
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.40 ± 0.28 % 0.019 ± 0.013 mm EX
Girdle-Table offset by table axis 0.25 ± 0.25 % 0.012 ± 0.012 mm EX
Table-Culet offset by table axis 0.65 ± 0.29 % 0.031 ± 0.014 mm EX
Girdle to table-culet line offset 0.65 % 0.031 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 4.790 4.791 4.794 4.799 – – – –
Radius, mm 2.393 2.393 2.399 2.397 2.395 2.396 2.395 2.400
Crown angle, ° 33.15 33.15 33.25 33.22 33.27 33.24 33.20 33.18
Pavilion angle, ° 40.66 40.74 40.67 40.46 40.56 40.57 40.70 40.69
Total height, % – – – – – – – –
Crown height, % 14.10 13.87 13.82 13.73 13.66 13.64 13.65 13.76
Crown height bone, % 14.18 13.97 13.66 14.09 13.73 13.91 13.69 13.82
Pavilion height, % 42.30 42.47 42.66 42.59 42.89 42.82 42.79 42.67
Pavilion upperbone, % 42.37 42.57 42.70 42.79 42.79 42.87 42.67 42.41
Table, % 57.57 57.89 58.15 58.18 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.82 3.87 3.73 3.89 3.67 3.75 3.77 3.79
Girdle height bone, % 3.66 3.67 3.86 3.33 3.70 3.43 3.86 3.98
Girdle height 2.12 2.24 2.36 2.03 2.18 2.37 2.00 1.63
valley, % 2.29 2.11 2.00 2.01 2.15 2.09 2.45 2.48
Star: 49.61: 50.39: 49.41: 49.51: 49.27: 51.81: 49.24: 49.09:
Upper ratio, % 50.39 49.61 50.59 50.49 50.73 48.19 50.76 50.91
Star angle, ° 20.20 20.94 19.71 19.95 19.93 20.61 20.26 20.38
Upper girdle 39.51 40.22 39.93 40.51 39.90 40.36 40.19 41.75
angle, ° 39.22 40.52 40.43 40.82 40.03 39.50 39.78 39.56
Length girdle 75.52 76.95 78.03 77.82 75.75 76.69 75.57 76.13
facet, % 75.57 75.77 76.79 76.82 75.95 75.51 76.81 75.66
Lower girdle angle / 41.86 41.85 41.91 41.88 41.88 41.73 41.74 41.83
Halves angle, ° 41.72 41.71 41.82 41.93 41.88 41.95 41.82 41.85
Facet Twist, ° 1.03 0.50 0.04 1.64 1.71 1.51 0.75 0.94
Crown height, mm 0.675 0.665 0.662 0.658 0.654 0.653 0.654 0.659
Pavilion height, mm 2.026 2.035 2.044 2.040 2.054 2.051 2.050 2.044
Table, mm 2.758 2.773 2.786 2.787 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.183 0.185 0.179 0.187 0.176 0.180 0.181 0.181
 
Measurement as per OctoNus theory:
Crown angle, ° 33.21 33.19 33.23 33.20 – – – –
Pavilion angle, ° 40.61 40.65 40.68 40.57 – – – –
MIC, mm 4.777 Extra Facet Crown No –
Girdle to MIC, mm 0.003 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° -0.38 Digging EX -2.82 -
Crown,notch. 0.1, Very small 0.8
Pavilion, ° -0.02 EX -0.92 -
Pavilion,notch. 0.0, Negligible 0.2