Illustrated report for brilliant

Polished Brilliant
Brilliant
09.06.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.92, 1.9193
Measurements 7.927 (7.893-7.945) x 4.913 / 0.002 (mm)
Spread -0.08ct, -4.38 %
AGS Spread -0.08 ct, -4.51%
Extra Facet Girdle / Nat 1 (1/0)
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.893 mm 7.945 mm 1.007 7.893 mm 7.945 mm 7.927 mm 4.913 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.187 mm 3.402 mm 4.517 mm 0.028 mm 0.324 mm 0.327 mm 0.195 mm
Appraiser title Lexus_Opt_12FEB2011
Overall cut quality --
Symmetry appraiser title Symmetry
Overall symmetry quality VG
Final grade N/A
Model building info The model has medium errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 7.927 7.893 7.945 0.65% -- VG
Radius, mm 3.962 3.943 3.979 0.037% – –
Crown angle, ° 34.86 34.72 35.00 0.27 EX EX
Pavilion angle, ° 40.75 40.63 40.87 0.24 EX EX
Total height, % 61.98 – – – VG –
Crown height, % 14.98 14.74 15.17 0.43 EX EX
Crown height bone, % 15.04 14.76 15.23 0.48 – –
Pavilion height, % 42.92 42.62 43.12 0.50 – –
Pavilion upperbone, % 42.82 42.53 43.05 0.52 – –
Table, % 56.99 56.86 57.09 0.23 EX EX
Culet, % 0.35 0.28 0.42 0.14 GD EX
Girdle height bezel, % 4.09 3.85 4.31 0.45 EX EX
Girdle height bone, % 4.13 3.93 4.30 0.36 – EX
Girdle height 2.46 2.11 2.96 0.85 N/A EX
valley, %
Star: 49.10: 48.09: 50.16: 2.08 EX VG
Upper ratio, % 50.90 51.91 49.84
Star angle, ° 21.39 21.03 21.78 0.75 – EX
Upper girdle 41.69 41.46 41.95 0.48 – EX
angle, °
Length girdle 77.73 76.78 78.19 1.41 EX EX
facet, %
Lower girdle angle / 41.85 41.70 42.00 0.30 – EX
Halves angle, °
Facet Twist, ° 0.28 0.01 0.50 0.49 – EX
Crown height, mm 1.187 1.168 1.203 0.034 EX EX
Pavilion height, mm 3.402 3.379 3.418 0.039 – –
Table, mm 4.517 4.507 4.525 0.018 EX EX
Culet, mm 0.028 0.022 0.033 0.011 GD EX
Girdle height bezel, mm 0.324 0.306 0.341 0.036 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.86 34.80 34.94 0.14 – –
Pavilion angle, ° 40.75 40.72 40.78 0.06 – –
Fish eye effect, ° 7.91 – – – N/A –
Culet through Crown Bezel, ° 9.52 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.13 0.01 0.25 0.12 -0.01 -0.10 0.17 -0.20
Crown azimuths dev. from ideal 0.38 -0.37 -0.08 0.15 0.00 0.14 -0.18 0.21
Crown painting -0.35 0.17 -0.76 -1.05 -0.26 0.13 -0.72 -0.41
0.10 -0.11 -0.67 0.00 -0.10 -0.16 -0.45 0.21
Pavilion painting -0.36 0.32 0.30 -0.27 0.32 0.34 0.12 0.34
0.13 0.34 0.26 0.17 0.24 0.40 0.18 0.39
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.08 ± 0.18 % 0.007 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.19 ± 0.16 % 0.015 ± 0.013 mm N/A
Table-Culet offset by table axis 0.23 ± 0.20 % 0.018 ± 0.016 mm N/A
Girdle to table-culet line offset 0.23 % 0.018 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.930 7.916 7.936 7.940 – – – –
Radius, mm 3.967 3.956 3.973 3.973 3.961 3.958 3.963 3.967
Crown angle, ° 35.00 34.88 34.82 34.80 34.88 34.72 34.92 34.89
Pavilion angle, ° 40.65 40.63 40.66 40.76 40.79 40.87 40.80 40.81
Total height, % – – – – – – – –
Crown height, % 15.17 15.06 15.16 15.10 14.80 14.74 14.91 14.87
Crown height bone, % 15.16 15.23 15.15 15.02 14.76 15.05 14.85 15.09
Pavilion height, % 42.67 42.62 42.90 43.03 43.03 43.12 42.99 42.96
Pavilion upperbone, % 42.53 42.61 42.83 42.89 43.05 43.00 42.92 42.72
Table, % 57.04 56.86 56.97 57.09 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 4.14 4.31 3.93 3.85 4.15 4.12 4.08 4.16
Girdle height bone, % 4.30 4.14 4.00 4.08 4.18 3.93 4.21 4.17
Girdle height 2.64 2.96 2.57 2.36 2.38 2.11 2.25 2.52
valley, % 2.69 2.60 2.37 2.17 2.49 2.68 2.42 2.12
Star: 48.98: 48.96: 48.09: 49.01: 50.16: 48.92: 49.87: 48.79:
Upper ratio, % 51.02 51.04 51.91 50.99 49.84 51.08 50.13 51.21
Star angle, ° 21.78 21.27 21.16 21.57 21.03 21.78 21.20 21.34
Upper girdle 41.54 41.51 41.95 41.78 41.66 41.61 41.73 41.67
angle, ° 41.46 41.49 41.83 41.83 41.70 41.60 41.91 41.74
Length girdle 77.79 77.86 77.82 77.96 77.94 77.77 77.77 78.14
facet, % 78.19 77.87 76.78 77.47 77.79 77.90 77.23 77.47
Lower girdle angle / 41.74 41.72 41.70 41.76 41.79 41.86 41.84 41.83
Halves angle, ° 41.91 42.00 41.94 41.95 41.88 41.92 41.88 41.80
Facet Twist, ° 0.50 0.39 0.34 0.03 0.01 0.23 0.36 0.41
Crown height, mm 1.203 1.194 1.202 1.197 1.174 1.168 1.182 1.179
Pavilion height, mm 3.383 3.379 3.401 3.411 3.411 3.418 3.408 3.405
Table, mm 4.521 4.507 4.516 4.525 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.328 0.341 0.311 0.306 0.329 0.327 0.323 0.329
 
Measurement as per OctoNus theory:
Crown angle, ° 34.94 34.80 34.87 34.85 – – – –
Pavilion angle, ° 40.72 40.75 40.73 40.78 – – – –
MIC, mm 7.891 Extra Facet Crown No –
Girdle to MIC, mm 0.002 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° -0.28 N/A -1.05 EX
Crown,notch. 0.1, Negligible 0.3
Pavilion, ° 0.20 N/A 0.40 EX
Pavilion,notch. 0.1, Negligible 0.1