Illustrated report for brilliant

Polished Brilliant
Brilliant
23.01.2026
Model Shadow scan
Expert name N/A
Scale weight, ct 1.58
Corrected mass, ct 1.58, 1.5855
Measurements 7.476 (7.451-7.494) x 4.597 / 0.003 (mm)
Spread -0.04ct, -2.79 %
AGS Spread -0.05 ct, -2.93%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.451 mm 7.494 mm 1.006 7.451 mm 7.494 mm 7.476 mm 4.597 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.116 mm 3.199 mm 4.257 mm 0.028 mm 0.281 mm 0.289 mm 0.162 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 7.476 7.451 7.494 0.59% -- EX
Radius, mm 3.737 3.723 3.751 0.028% – –
Crown angle, ° 34.72 34.62 34.80 0.18 EX EX
Pavilion angle, ° 40.68 40.50 40.86 0.36 EX EX
Total height, % 61.49 – – – VG –
Crown height, % 14.93 14.72 15.02 0.30 EX EX
Crown height bone, % 14.89 14.73 15.10 0.38 – –
Pavilion height, % 42.80 42.64 42.95 0.32 – –
Pavilion upperbone, % 42.73 42.57 42.91 0.35 – –
Table, % 56.94 56.89 57.00 0.11 EX EX
Culet, % 0.38 0.29 0.44 0.15 GD EX
Girdle height bezel, % 3.77 3.56 3.99 0.43 EX EX
Girdle height bone, % 3.86 3.61 4.02 0.41 – EX
Girdle height 2.17 1.80 2.52 0.71 N/A EX
valley, %
Star: 45.63: 45.36: 46.11: 0.76 EX EX
Upper ratio, % 54.37 54.64 53.89
Star angle, ° 20.60 20.24 20.90 0.66 – EX
Upper girdle 40.72 40.15 41.21 1.06 – VG
angle, °
Length girdle 76.99 76.26 77.92 1.67 EX EX
facet, %
Lower girdle angle / 41.83 41.57 42.03 0.46 – EX
Halves angle, °
Facet Twist, ° 0.20 0.05 0.38 0.33 – EX
Crown height, mm 1.116 1.101 1.123 0.022 EX EX
Pavilion height, mm 3.199 3.188 3.211 0.024 – –
Table, mm 4.257 4.253 4.261 0.008 EX EX
Culet, mm 0.028 0.022 0.033 0.011 GD EX
Girdle height bezel, mm 0.281 0.266 0.298 0.032 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.72 34.64 34.76 0.12 – –
Pavilion angle, ° 40.68 40.64 40.74 0.10 – –
Fish eye effect, ° 7.71 – – – N/A –
Culet through Crown Bezel, ° 10.17 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.15 -0.28 0.15 -0.05 0.05 0.11 0.12 -0.01
Crown azimuths dev. from ideal 0.12 0.07 0.27 -0.01 -0.35 -0.08 0.05 -0.17
Crown painting 0.05 -0.10 -0.79 0.12 0.18 0.04 0.38 1.06
0.66 0.61 0.12 0.49 -0.12 -0.03 -0.54 -0.04
Pavilion painting 0.09 0.51 0.01 -0.05 0.52 0.18 0.09 0.11
0.34 0.41 -0.17 0.12 0.38 0.24 0.62 0.24
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.27 ± 0.19 % 0.020 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.08 ± 0.17 % 0.006 ± 0.013 mm N/A
Table-Culet offset by table axis 0.22 ± 0.21 % 0.016 ± 0.015 mm N/A
Girdle to table-culet line offset 0.22 % 0.016 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.469 7.478 7.471 7.489 – – – –
Radius, mm 3.736 3.739 3.739 3.738 3.732 3.739 3.731 3.749
Crown angle, ° 34.74 34.79 34.66 34.80 34.74 34.73 34.62 34.67
Pavilion angle, ° 40.68 40.75 40.54 40.50 40.61 40.73 40.81 40.86
Total height, % – – – – – – – –
Crown height, % 14.92 15.02 15.00 14.94 14.92 14.91 14.72 14.98
Crown height bone, % 14.95 15.10 15.03 14.85 14.74 14.73 14.86 14.90
Pavilion height, % 42.64 42.90 42.68 42.74 42.78 42.91 42.77 42.95
Pavilion upperbone, % 42.61 42.77 42.70 42.79 42.75 42.91 42.75 42.57
Table, % 56.89 56.97 56.91 57.00 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.93 3.57 3.82 3.81 3.79 3.66 3.99 3.56
Girdle height bone, % 3.93 3.61 3.76 3.85 4.00 3.85 3.88 4.02
Girdle height 2.34 2.05 1.80 2.02 2.33 2.15 2.29 2.09
valley, % 2.44 2.06 2.13 2.12 2.52 2.05 2.03 2.30
Star: 45.56: 45.36: 46.11: 45.62: 45.38: 45.88: 45.68: 45.48:
Upper ratio, % 54.44 54.64 53.89 54.38 54.62 54.12 54.32 54.52
Star angle, ° 20.60 20.79 20.74 20.90 20.41 20.29 20.84 20.24
Upper girdle 40.95 41.01 41.21 40.70 40.57 40.68 40.54 40.15
angle, ° 40.44 40.75 40.60 40.38 40.76 40.90 41.10 40.81
Length girdle 76.26 76.94 76.39 77.03 77.78 77.45 77.22 77.92
facet, % 77.15 77.35 76.66 76.44 77.00 76.70 76.75 76.89
Lower girdle angle / 41.87 41.95 41.89 41.75 41.57 41.63 41.63 41.73
Halves angle, ° 41.76 41.85 41.90 42.02 41.92 42.03 41.92 41.82
Facet Twist, ° 0.28 0.37 0.13 0.05 0.38 0.17 0.05 0.15
Crown height, mm 1.115 1.123 1.121 1.117 1.115 1.115 1.101 1.120
Pavilion height, mm 3.188 3.207 3.190 3.195 3.199 3.208 3.198 3.211
Table, mm 4.253 4.259 4.254 4.261 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.294 0.267 0.285 0.285 0.283 0.274 0.298 0.266
 
Measurement as per OctoNus theory:
Crown angle, ° 34.74 34.76 34.64 34.73 – – – –
Pavilion angle, ° 40.64 40.74 40.68 40.68 – – – –
MIC, mm 7.448 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, ° 0.13 N/A 1.06 EX
Crown,notch. 0.0, Negligible 0.3
Pavilion, ° 0.23 N/A 0.62 EX
Pavilion,notch. 0.1, Negligible 0.2