Illustrated report for brilliant

Polished Brilliant
Brilliant
19.12.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.87, 1.8770
Measurements 7.901 (7.880-7.919) x 4.876 / 0.004 (mm)
Spread -0.06ct, -3.08 %
AGS Spread -0.06 ct, -3.22%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.880 mm 7.919 mm 1.005 7.880 mm 7.919 mm 7.901 mm 4.876 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.171 mm 3.392 mm 4.477 mm 0.030 mm 0.313 mm 0.292 mm 0.171 mm
Appraiser title GIA Facetware.Mfg
Overall cut quality EX
Symmetry appraiser title GIA Facetware.Mfg
Overall symmetry quality EX
Final grade EX
Model building info The model has small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 7.901 7.880 7.919 0.50% - EX
Radius, mm 3.949 3.936 3.964 0.029% – –
Crown angle, ° 34.34 34.15 34.51 0.37 EX EX
Pavilion angle, ° 40.80 40.67 40.95 0.28 EX EX
Total height, % 61.72 – – – - –
Crown height, % 14.82 14.66 14.97 0.31 - EX
Crown height bone, % 15.07 14.85 15.35 0.51 – –
Pavilion height, % 42.94 42.60 43.16 0.56 – –
Pavilion upperbone, % 42.95 42.65 43.18 0.53 – –
Table, % 56.67 56.32 56.86 0.53 EX EX
Culet, % 0.38 0.34 0.40 0.07 EX -
Girdle height bezel, % 3.96 3.73 4.37 0.64 EX EX
Girdle height bone, % 3.69 3.21 3.91 0.70 – -
Girdle height 2.17 1.74 2.63 0.89 - -
valley, %
Star: 45.72: 44.77: 46.61: 1.84 EX EX
Upper ratio, % 54.28 55.23 53.39
Star angle, ° 20.58 20.37 20.92 0.55 – EX
Upper girdle 40.99 40.50 41.59 1.09 – EX
angle, °
Length girdle 76.97 75.98 78.44 2.46 EX EX
facet, %
Lower girdle angle / 41.98 41.76 42.14 0.38 – EX
Halves angle, °
Facet Twist, ° 0.21 0.06 0.45 0.39 – -
Crown height, mm 1.171 1.158 1.183 0.024 - EX
Pavilion height, mm 3.392 3.365 3.410 0.044 – –
Table, mm 4.477 4.450 4.492 0.042 EX EX
Culet, mm 0.030 0.027 0.032 0.005 EX -
Girdle height bezel, mm 0.313 0.295 0.345 0.050 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.34 34.26 34.39 0.14 – –
Pavilion angle, ° 40.80 40.77 40.85 0.08 – –
Fish eye effect, ° 8.37 – – – - –
Culet through Crown Bezel, ° 10.28 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.04 -0.29 -0.03 0.01 0.05 -0.15 -0.05 -0.26
Crown azimuths dev. from ideal 0.01 -0.70 0.09 0.33 0.17 -0.26 -0.15 0.19
Crown painting -1.66 -1.00 -1.12 -1.16 -2.05 -1.31 -0.94 -0.71
0.28 0.15 -0.60 0.31 -0.95 0.27 -1.13 -0.92
Pavilion painting -0.11 0.36 -0.55 -0.14 -0.23 0.02 -0.04 -0.34
-0.23 0.28 -0.39 0.25 -0.04 0.42 -0.55 -0.15
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.41 ± 0.18 % 0.032 ± 0.015 mm EX
Girdle-Table offset by table axis 0.13 ± 0.16 % 0.010 ± 0.013 mm EX
Table-Culet offset by table axis 0.28 ± 0.20 % 0.022 ± 0.016 mm EX
Girdle to table-culet line offset 0.28 % 0.022 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.892 7.900 7.903 7.912 – – – –
Radius, mm 3.946 3.945 3.956 3.954 3.946 3.955 3.946 3.958
Crown angle, ° 34.42 34.41 34.15 34.28 34.27 34.33 34.37 34.51
Pavilion angle, ° 40.95 40.76 40.78 40.69 40.67 40.78 40.91 40.89
Total height, % – – – – – – – –
Crown height, % 14.83 14.75 14.74 14.82 14.97 14.83 14.66 14.94
Crown height bone, % 15.30 15.00 15.35 15.00 14.96 14.85 14.92 15.18
Pavilion height, % 42.75 42.60 43.00 43.09 43.02 43.16 43.03 42.87
Pavilion upperbone, % 42.65 42.80 43.15 42.93 43.18 43.14 42.91 42.86
Table, % 56.32 56.76 56.86 56.72 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 4.13 4.37 3.97 3.80 3.73 3.73 4.03 3.91
Girdle height bone, % 3.76 3.91 3.21 3.79 3.58 3.72 3.88 3.67
Girdle height 2.17 2.63 2.46 2.17 1.74 1.81 2.15 2.21
valley, % 1.88 1.97 2.25 2.42 2.04 2.38 2.10 2.29
Star: 44.77: 45.45: 45.38: 45.54: 46.61: 46.18: 46.10: 45.71:
Upper ratio, % 55.23 54.55 54.62 54.46 53.39 53.82 53.90 54.29
Star angle, ° 20.53 20.37 20.37 20.66 20.56 20.92 20.80 20.46
Upper girdle 41.59 41.34 41.16 41.21 41.51 41.39 40.73 40.52
angle, ° 40.59 40.52 40.54 40.50 41.12 40.76 41.11 41.21
Length girdle 77.94 78.44 76.68 76.75 76.01 75.98 76.67 77.13
facet, % 77.42 76.82 76.26 76.21 76.93 77.16 77.63 77.49
Lower girdle angle / 42.05 41.89 41.96 41.96 42.00 41.92 41.83 41.76
Halves angle, ° 41.97 42.00 41.92 42.02 42.11 41.97 42.12 42.14
Facet Twist, ° 0.06 0.45 0.08 0.29 0.09 0.15 0.14 0.42
Crown height, mm 1.172 1.166 1.165 1.171 1.183 1.172 1.158 1.180
Pavilion height, mm 3.378 3.365 3.398 3.404 3.399 3.410 3.399 3.387
Table, mm 4.450 4.485 4.492 4.481 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.327 0.345 0.314 0.300 0.295 0.295 0.318 0.309
 
Measurement as per OctoNus theory:
Crown angle, ° 34.35 34.37 34.26 34.39 – – – –
Pavilion angle, ° 40.81 40.77 40.85 40.79 – – – –
MIC, mm 7.876 Extra Facet Crown No –
Girdle to MIC, mm 0.004 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° -0.78 Digging EX -2.05 -
Crown,notch. 0.2, Very small 0.5
Pavilion, ° -0.09 EX -0.55 -
Pavilion,notch. 0.0, Negligible 0.1