Illustrated report for brilliant

Polished Brilliant
Brilliant
07.10.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 2.01, 2.0099
Measurements 8.152 (8.127-8.173) x 4.976 / 0.005 (mm)
Spread -0.01ct, -0.49 %
AGS Spread -0.01 ct, -0.63%
Extra Facet Girdle / Nat 1 (1/0)
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.127 mm 8.173 mm 1.006 8.127 mm 8.173 mm 8.152 mm 4.976 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.226 mm 3.485 mm 4.529 mm 0.027 mm 0.266 mm 0.295 mm 0.147 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 small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 8.152 8.127 8.173 0.56% -- EX
Radius, mm 4.074 4.059 4.087 0.027% – –
Crown angle, ° 34.07 33.89 34.28 0.39 EX EX
Pavilion angle, ° 40.67 40.57 40.79 0.22 EX EX
Total height, % 61.05 – – – EX –
Crown height, % 15.03 14.72 15.57 0.85 EX VG
Crown height bone, % 14.59 14.32 15.04 0.72 – –
Pavilion height, % 42.75 42.57 42.89 0.33 – –
Pavilion upperbone, % 42.83 42.45 43.19 0.74 – –
Table, % 55.55 55.03 55.91 0.89 EX EX
Culet, % 0.33 0.23 0.37 0.14 GD EX
Girdle height bezel, % 3.27 2.78 3.62 0.84 EX VG
Girdle height bone, % 3.62 3.07 4.01 0.94 – VG
Girdle height 1.81 1.31 2.29 0.97 N/A EX
valley, %
Star: 47.89: 47.32: 48.67: 1.35 EX EX
Upper ratio, % 52.11 52.68 51.33
Star angle, ° 21.29 20.82 22.14 1.33 – EX
Upper girdle 39.18 38.11 39.90 1.79 – VG
angle, °
Length girdle 76.18 74.60 77.00 2.40 EX EX
facet, %
Lower girdle angle / 41.91 41.71 42.19 0.49 – EX
Halves angle, °
Facet Twist, ° 0.34 0.18 0.75 0.57 – EX
Crown height, mm 1.226 1.200 1.269 0.070 EX VG
Pavilion height, mm 3.485 3.470 3.497 0.027 – –
Table, mm 4.529 4.486 4.558 0.072 EX EX
Culet, mm 0.027 0.019 0.030 0.012 GD EX
Girdle height bezel, mm 0.266 0.227 0.295 0.069 EX VG
Measurement as per OctoNus theory:
Crown angle, ° 34.07 33.96 34.13 0.17 – –
Pavilion angle, ° 40.67 40.60 40.74 0.14 – –
Fish eye effect, ° 8.48 – – – N/A –
Culet through Crown Bezel, ° 10.23 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.10 0.16 0.12 -0.11 -0.14 -0.27 -0.15 0.21
Crown azimuths dev. from ideal -0.49 -0.59 -0.14 -0.30 -0.34 0.05 0.06 0.39
Crown painting 1.48 0.87 0.70 1.55 0.60 2.10 0.81 2.31
1.35 1.84 1.19 2.25 0.86 2.14 2.64 4.29
Pavilion painting -0.83 0.21 -0.54 0.14 0.04 0.25 -0.71 0.16
-1.02 -0.32 -0.11 0.14 -0.04 0.51 -1.47 -0.54
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.10 ± 0.18 % 0.008 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.33 ± 0.15 % 0.027 ± 0.013 mm N/A
Table-Culet offset by table axis 0.36 ± 0.19 % 0.029 ± 0.016 mm N/A
Girdle to table-culet line offset 0.36 % 0.029 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.156 8.134 8.166 8.151 – – – –
Radius, mm 4.073 4.067 4.083 4.075 4.082 4.067 4.083 4.074
Crown angle, ° 34.28 34.17 33.89 33.95 33.98 34.01 34.03 34.23
Pavilion angle, ° 40.62 40.69 40.67 40.63 40.74 40.79 40.60 40.57
Total height, % – – – – – – – –
Crown height, % 15.57 14.96 14.79 14.72 14.98 14.88 15.05 15.33
Crown height bone, % 15.04 14.49 14.43 14.32 14.54 14.44 14.75 14.71
Pavilion height, % 42.69 42.80 42.89 42.71 42.89 42.79 42.64 42.57
Pavilion upperbone, % 42.94 42.88 42.84 42.77 43.19 42.60 42.45 43.00
Table, % 55.03 55.75 55.91 55.53 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 2.78 3.29 3.37 3.62 3.18 3.38 3.36 3.15
Girdle height bone, % 3.07 3.68 3.78 3.96 3.31 4.01 3.85 3.34
Girdle height 1.36 1.42 1.86 1.87 1.89 2.05 2.29 1.95
valley, % 1.62 1.65 2.27 2.03 1.87 1.81 1.69 1.31
Star: 47.32: 48.67: 47.55: 48.06: 47.84: 48.01: 47.98: 47.70:
Upper ratio, % 52.68 51.33 52.45 51.94 52.16 51.99 52.02 52.30
Star angle, ° 21.45 21.12 21.07 21.16 20.82 21.28 21.25 22.14
Upper girdle 39.34 39.90 39.86 39.39 39.42 39.08 39.23 38.93
angle, ° 39.01 39.21 39.33 38.89 39.49 38.96 38.68 38.11
Length girdle 76.79 76.87 77.00 76.50 75.61 75.57 76.73 76.66
facet, % 75.78 75.97 74.60 75.50 75.86 75.80 76.89 76.67
Lower girdle angle / 41.85 41.95 41.87 41.86 41.85 41.94 41.84 41.92
Halves angle, ° 42.12 42.19 41.94 41.86 41.73 41.71 42.02 41.94
Facet Twist, ° 0.60 0.75 0.26 0.19 0.19 0.32 0.21 0.18
Crown height, mm 1.269 1.219 1.206 1.200 1.221 1.213 1.227 1.250
Pavilion height, mm 3.480 3.489 3.496 3.481 3.497 3.488 3.476 3.470
Table, mm 4.486 4.545 4.558 4.526 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.227 0.268 0.274 0.295 0.259 0.276 0.274 0.257
 
Measurement as per OctoNus theory:
Crown angle, ° 34.13 34.09 33.96 34.09 – – – –
Pavilion angle, ° 40.68 40.74 40.64 40.60 – – – –
MIC, mm 8.123 Extra Facet Crown No –
Girdle to MIC, mm 0.005 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 1.69 Painting N/A 4.29 EX
Crown,notch. 0.4, Small 1.1
Pavilion, ° -0.26 N/A -1.47 EX
Pavilion,notch. 0.1, Negligible 0.4