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 2.36, 2.3658
Measurements 8.571 (8.556-8.587) x 5.239 / 0.003 (mm)
Spread -0.04ct, -1.74 %
AGS Spread -0.04 ct, -1.89%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.556 mm 8.587 mm 1.004 8.556 mm 8.587 mm 8.571 mm 5.239 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.245 mm 3.677 mm 4.891 mm 0.028 mm 0.317 mm 0.314 mm 0.180 mm
Appraiser title Lexus_Opt_12FEB2011
Overall cut quality N/A
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 8.571 8.556 8.587 0.36% GD EX
Radius, mm 4.284 4.276 4.295 0.019% – –
Crown angle, ° 34.06 33.97 34.14 0.16 EX EX
Pavilion angle, ° 40.74 40.60 40.85 0.25 EX EX
Total height, % 61.12 – – – EX –
Crown height, % 14.52 14.43 14.62 0.19 EX EX
Crown height bone, % 14.51 14.33 14.68 0.35 – –
Pavilion height, % 42.90 42.76 43.18 0.42 – –
Pavilion upperbone, % 42.95 42.81 43.13 0.32 – –
Table, % 57.06 56.79 57.27 0.49 EX EX
Culet, % 0.33 0.25 0.41 0.16 GD EX
Girdle height bezel, % 3.70 3.48 3.90 0.42 EX EX
Girdle height bone, % 3.66 3.37 3.83 0.46 – EX
Girdle height 2.10 1.76 2.46 0.69 N/A EX
valley, %
Star: 48.08: 47.15: 49.10: 1.95 EX EX
Upper ratio, % 51.92 52.85 50.90
Star angle, ° 20.72 20.47 21.01 0.54 – EX
Upper girdle 40.36 39.88 41.04 1.16 – VG
angle, °
Length girdle 75.74 74.97 77.26 2.29 -- EX
facet, %
Lower girdle angle / 41.97 41.76 42.10 0.34 – EX
Halves angle, °
Facet Twist, ° 0.18 0.08 0.33 0.25 – EX
Crown height, mm 1.245 1.237 1.253 0.017 EX EX
Pavilion height, mm 3.677 3.665 3.701 0.036 – –
Table, mm 4.891 4.867 4.909 0.042 EX EX
Culet, mm 0.028 0.021 0.035 0.014 GD EX
Girdle height bezel, mm 0.317 0.298 0.334 0.036 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.06 34.02 34.09 0.07 – –
Pavilion angle, ° 40.74 40.70 40.78 0.07 – –
Fish eye effect, ° 7.88 – – – N/A –
Culet through Crown Bezel, ° 11.69 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.01 0.05 -0.04 -0.05 -0.15 -0.19 0.02 -0.02
Crown azimuths dev. from ideal -0.14 -0.07 -0.24 -0.26 0.03 0.18 0.16 0.10
Crown painting 0.47 0.75 -0.53 0.71 -0.36 1.07 -0.85 0.58
-0.40 0.36 0.09 -0.07 -0.16 0.20 0.08 -0.94
Pavilion painting 0.02 0.05 0.26 -0.32 -0.28 0.09 -0.41 0.01
-0.47 0.30 -0.33 -0.33 -0.30 -0.13 0.05 0.02
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.24 ± 0.17 % 0.021 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.12 ± 0.15 % 0.010 ± 0.013 mm N/A
Table-Culet offset by table axis 0.29 ± 0.19 % 0.025 ± 0.016 mm N/A
Girdle to table-culet line offset 0.29 % 0.025 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.579 8.572 8.579 8.566 – – – –
Radius, mm 4.287 4.288 4.289 4.282 4.290 4.283 4.290 4.283
Crown angle, ° 34.14 34.12 34.11 34.06 34.01 34.01 34.06 33.97
Pavilion angle, ° 40.79 40.81 40.79 40.85 40.77 40.65 40.62 40.60
Total height, % – – – – – – – –
Crown height, % 14.47 14.43 14.50 14.57 14.62 14.46 14.57 14.54
Crown height bone, % 14.33 14.48 14.45 14.62 14.48 14.56 14.46 14.68
Pavilion height, % 43.18 43.05 42.82 42.81 42.86 42.76 42.88 42.89
Pavilion upperbone, % 43.13 43.00 42.85 42.90 42.81 43.03 42.83 43.06
Table, % 57.06 57.27 57.14 56.79 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.48 3.64 3.80 3.74 3.65 3.90 3.68 3.69
Girdle height bone, % 3.66 3.64 3.83 3.60 3.83 3.53 3.83 3.37
Girdle height 1.86 2.24 2.01 2.16 2.10 2.20 2.20 1.95
valley, % 2.10 2.46 2.11 2.00 2.32 2.24 1.96 1.76
Star: 48.62: 48.34: 47.50: 47.65: 47.15: 48.43: 49.10: 47.86:
Upper ratio, % 51.38 51.66 52.50 52.35 52.85 51.57 50.90 52.14
Star angle, ° 20.81 20.77 20.66 20.47 20.47 21.01 20.75 20.80
Upper girdle 40.44 40.22 40.70 40.32 40.38 40.02 40.51 40.28
angle, ° 40.15 39.88 40.43 40.39 40.35 40.20 40.44 41.04
Length girdle 75.60 75.77 77.06 77.26 75.59 75.28 75.03 75.26
facet, % 75.14 75.46 76.34 76.33 75.23 75.96 74.97 75.59
Lower girdle angle / 42.03 41.99 42.03 41.96 42.10 42.10 42.09 42.10
Halves angle, ° 41.98 41.80 41.94 41.94 41.82 41.76 41.87 41.96
Facet Twist, ° 0.16 0.15 0.23 0.24 0.15 0.33 0.11 0.08
Crown height, mm 1.240 1.237 1.243 1.249 1.253 1.240 1.249 1.247
Pavilion height, mm 3.701 3.690 3.670 3.669 3.673 3.665 3.675 3.676
Table, mm 4.891 4.909 4.898 4.867 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.298 0.312 0.326 0.321 0.313 0.334 0.315 0.316
 
Measurement as per OctoNus theory:
Crown angle, ° 34.07 34.06 34.09 34.02 – – – –
Pavilion angle, ° 40.78 40.73 40.70 40.73 – – – –
MIC, mm 8.554 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, ° 0.06 N/A 1.07 EX
Crown,notch. 0.0, Negligible 0.3
Pavilion, ° -0.11 N/A -0.47 EX
Pavilion,notch. 0.0, Negligible 0.1