Illustrated report for brilliant

Polished Brilliant
Brilliant
28.03.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 2.03, 2.0323
Measurements 8.193 (8.174-8.204) x 4.966 / 0.001 (mm)
Spread 0.00ct, -0.06 %
AGS Spread 0.00 ct, -0.21%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.174 mm 8.204 mm 1.004 8.174 mm 8.204 mm 8.193 mm 4.966 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.187 mm 3.513 mm 4.683 mm 0.031 mm 0.266 mm 0.313 mm 0.154 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 8.193 8.174 8.204 0.36% - EX
Radius, mm 4.095 4.087 4.106 0.019% – –
Crown angle, ° 34.16 34.05 34.24 0.20 EX EX
Pavilion angle, ° 40.76 40.66 40.90 0.24 EX EX
Total height, % 60.62 – – – - –
Crown height, % 14.49 14.23 14.69 0.46 - EX
Crown height bone, % 13.89 13.70 14.06 0.36 – –
Pavilion height, % 42.88 42.71 43.10 0.39 – –
Pavilion upperbone, % 42.91 42.77 43.16 0.39 – –
Table, % 57.15 56.90 57.35 0.45 EX EX
Culet, % 0.38 0.27 0.46 0.19 EX -
Girdle height bezel, % 3.25 2.98 3.45 0.47 EX EX
Girdle height bone, % 3.82 3.57 4.00 0.43 – -
Girdle height 1.88 1.55 2.11 0.56 - -
valley, %
Star: 51.07: 49.94: 52.01: 2.07 EX EX
Upper ratio, % 48.93 50.06 47.99
Star angle, ° 21.25 20.97 21.71 0.74 – EX
Upper girdle 39.32 38.80 39.77 0.97 – EX
angle, °
Length girdle 77.65 76.54 78.76 2.21 EX EX
facet, %
Lower girdle angle / 41.91 41.77 42.10 0.33 – EX
Halves angle, °
Facet Twist, ° 0.31 0.18 0.49 0.31 – -
Crown height, mm 1.187 1.166 1.204 0.038 - EX
Pavilion height, mm 3.513 3.500 3.532 0.032 – –
Table, mm 4.683 4.662 4.699 0.037 EX EX
Culet, mm 0.031 0.022 0.038 0.016 EX -
Girdle height bezel, mm 0.266 0.244 0.283 0.039 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.16 34.11 34.22 0.11 – –
Pavilion angle, ° 40.76 40.71 40.82 0.11 – –
Fish eye effect, ° 7.93 – – – - –
Culet through Crown Bezel, ° 12.10 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.16 -0.15 0.24 0.24 -0.03 -0.16 -0.05 0.05
Crown azimuths dev. from ideal 0.05 0.37 0.56 0.47 0.42 0.29 0.26 -0.13
Crown painting 1.56 2.33 2.11 2.47 2.26 2.18 2.86 2.99
2.96 2.93 2.09 1.51 2.16 2.35 1.80 1.80
Pavilion painting -0.19 0.05 -0.18 -0.15 0.24 -0.20 -0.06 0.15
-0.12 0.14 -0.21 0.09 -0.58 -0.10 -0.10 -0.03
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.02 ± 0.18 % 0.002 ± 0.015 mm EX
Girdle-Table offset by table axis 0.21 ± 0.15 % 0.017 ± 0.013 mm EX
Table-Culet offset by table axis 0.19 ± 0.19 % 0.016 ± 0.016 mm EX
Girdle to table-culet line offset 0.19 % 0.016 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.188 8.190 8.191 8.194 – – – –
Radius, mm 4.094 4.096 4.090 4.101 4.093 4.093 4.101 4.092
Crown angle, ° 34.05 34.23 34.13 34.19 34.20 34.11 34.08 34.24
Pavilion angle, ° 40.83 40.81 40.73 40.73 40.71 40.66 40.69 40.90
Total height, % – – – – – – – –
Crown height, % 14.23 14.37 14.45 14.69 14.59 14.55 14.48 14.53
Crown height bone, % 13.70 13.84 13.96 13.85 13.85 14.06 13.96 13.89
Pavilion height, % 43.01 42.90 42.71 42.94 42.79 42.72 42.85 43.10
Pavilion upperbone, % 42.98 42.83 42.81 42.86 42.77 42.80 43.08 43.16
Table, % 57.35 57.21 57.15 56.90 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.37 3.34 3.45 2.98 3.23 3.35 3.28 2.98
Girdle height bone, % 3.94 3.95 3.84 3.90 4.00 3.76 3.58 3.57
Girdle height 2.03 1.98 1.88 2.03 1.85 1.77 1.66 2.06
valley, % 2.01 2.11 1.92 1.98 1.77 1.55 1.56 1.95
Star: 51.01: 49.94: 50.79: 52.01: 51.22: 51.47: 50.69: 51.45:
Upper ratio, % 48.99 50.06 49.21 47.99 48.78 48.53 49.31 48.55
Star angle, ° 20.98 21.10 21.09 21.71 21.55 21.37 21.25 20.97
Upper girdle 39.65 39.28 39.72 39.20 39.20 38.97 39.19 38.87
angle, ° 39.02 38.80 39.49 39.62 39.32 39.31 39.77 39.71
Length girdle 77.88 77.67 76.54 76.77 77.27 78.22 76.98 77.01
facet, % 78.05 78.37 77.49 77.95 78.76 78.04 77.85 77.52
Lower girdle angle / 41.97 41.96 41.99 41.92 41.87 41.84 41.93 41.89
Halves angle, ° 41.77 41.79 41.81 41.79 41.94 41.99 42.10 42.04
Facet Twist, ° 0.18 0.49 0.29 0.20 0.43 0.42 0.27 0.20
Crown height, mm 1.166 1.178 1.184 1.204 1.196 1.192 1.187 1.191
Pavilion height, mm 3.524 3.515 3.500 3.518 3.506 3.500 3.511 3.532
Table, mm 4.699 4.687 4.682 4.662 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.276 0.274 0.283 0.245 0.264 0.275 0.269 0.244
 
Measurement as per OctoNus theory:
Crown angle, ° 34.13 34.17 34.11 34.22 – – – –
Pavilion angle, ° 40.77 40.74 40.71 40.82 – – – –
MIC, mm 8.173 Extra Facet Crown No –
Girdle to MIC, mm 0.001 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 2.27 Painting EX 2.99 -
Crown,notch. 0.6, Small 0.8
Pavilion, ° -0.08 EX -0.58 -
Pavilion,notch. 0.0, Negligible 0.2