Illustrated report for brilliant

Polished Brilliant
Brilliant
01.04.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.98, 1.9827
Measurements 8.052 (8.038-8.067) x 4.978 / 0.013 (mm)
Spread -0.06ct, -2.89 %
AGS Spread -0.06 ct, -3.02%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.038 mm 8.067 mm 1.004 8.038 mm 8.067 mm 8.052 mm 4.978 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.213 mm 3.469 mm 4.550 mm 0.031 mm 0.296 mm 0.289 mm 0.155 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 small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 8.052 8.038 8.067 0.36% GD EX
Radius, mm 4.024 4.011 4.045 0.034% – –
Crown angle, ° 34.82 34.35 35.15 0.80 EX VG
Pavilion angle, ° 40.89 40.72 41.14 0.43 EX EX
Total height, % 61.83 – – – VG –
Crown height, % 15.07 14.81 15.29 0.47 EX EX
Crown height bone, % 15.10 14.69 15.65 0.96 – –
Pavilion height, % 43.08 42.71 43.58 0.87 – –
Pavilion upperbone, % 43.14 42.87 43.49 0.62 – –
Table, % 56.51 56.31 56.59 0.27 EX EX
Culet, % 0.38 0.29 0.44 0.15 GD EX
Girdle height bezel, % 3.67 3.41 3.92 0.51 EX EX
Girdle height bone, % 3.59 3.29 3.93 0.64 – EX
Girdle height 1.92 1.39 2.23 0.84 N/A EX
valley, %
Star: 49.47: 48.53: 50.50: 1.97 EX EX
Upper ratio, % 50.53 51.47 49.50
Star angle, ° 21.66 21.36 22.07 0.71 – EX
Upper girdle 41.30 40.39 42.54 2.15 – VG
angle, °
Length girdle 75.73 74.34 76.98 2.64 -- EX
facet, %
Lower girdle angle / 42.13 41.92 42.48 0.55 – EX
Halves angle, °
Facet Twist, ° 0.40 0.08 0.73 0.65 – EX
Crown height, mm 1.213 1.193 1.231 0.038 EX EX
Pavilion height, mm 3.469 3.439 3.509 0.070 – –
Table, mm 4.550 4.534 4.556 0.022 EX EX
Culet, mm 0.031 0.023 0.035 0.012 GD EX
Girdle height bezel, mm 0.296 0.275 0.316 0.041 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.82 34.72 35.00 0.28 – –
Pavilion angle, ° 40.89 40.83 40.95 0.12 – –
Fish eye effect, ° 8.79 – – – N/A –
Culet through Crown Bezel, ° 9.26 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.28 -0.20 -0.32 0.02 -0.22 0.21 -0.02 0.36
Crown azimuths dev. from ideal -0.01 0.53 0.50 0.22 0.07 -0.25 0.16 -0.25
Crown painting -0.12 -0.49 -0.23 1.18 -1.05 1.15 -0.01 0.56
-0.46 1.38 -2.41 -0.49 0.44 0.59 -0.28 0.29
Pavilion painting -0.44 -0.34 -0.15 0.38 -1.05 0.18 -0.44 0.46
-0.71 0.45 -0.57 0.14 -1.02 0.03 -0.44 0.38
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.20 ± 0.18 % 0.016 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.20 ± 0.16 % 0.016 ± 0.013 mm N/A
Table-Culet offset by table axis 0.40 ± 0.20 % 0.032 ± 0.016 mm N/A
Girdle to table-culet line offset 0.40 % 0.032 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.053 8.046 8.041 8.052 – – – –
Radius, mm 4.024 4.026 4.024 4.021 4.028 4.020 4.017 4.030
Crown angle, ° 34.69 34.53 34.93 35.15 34.90 34.91 35.08 34.35
Pavilion angle, ° 41.14 41.03 40.75 40.72 40.75 40.79 40.91 41.00
Total height, % – – – – – – – –
Crown height, % 14.83 14.81 14.97 15.24 15.29 15.20 15.27 14.95
Crown height bone, % 14.73 15.00 15.00 15.23 15.34 15.65 15.12 14.69
Pavilion height, % 43.58 43.46 43.03 42.84 42.83 42.71 42.89 43.33
Pavilion upperbone, % 43.49 43.38 42.90 42.87 42.92 42.89 43.30 43.40
Table, % 56.58 56.57 56.59 56.31 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.41 3.55 3.82 3.75 3.71 3.92 3.67 3.55
Girdle height bone, % 3.61 3.44 3.93 3.73 3.57 3.29 3.41 3.73
Girdle height 1.64 2.10 1.39 1.84 2.23 2.12 2.01 1.95
valley, % 2.02 2.17 1.95 1.73 1.85 1.96 1.91 1.88
Star: 50.50: 50.41: 49.50: 49.61: 49.77: 48.72: 48.53: 48.72:
Upper ratio, % 49.50 49.59 50.50 50.39 50.23 51.28 51.47 51.28
Star angle, ° 21.51 21.58 21.56 21.93 22.07 21.85 21.36 21.45
Upper girdle 41.66 41.29 41.68 41.02 41.72 41.11 41.42 41.28
angle, ° 41.45 40.97 42.54 42.27 40.93 40.59 40.39 40.56
Length girdle 74.69 75.62 76.96 76.14 76.98 76.18 75.39 75.59
facet, % 76.13 76.81 76.13 75.43 75.20 74.34 74.87 75.21
Lower girdle angle / 42.48 42.28 42.23 41.96 41.98 41.93 41.96 41.98
Halves angle, ° 42.02 41.92 42.04 42.16 42.25 42.34 42.25 42.28
Facet Twist, ° 0.17 0.64 0.73 0.12 0.20 0.55 0.08 0.71
Crown height, mm 1.194 1.193 1.206 1.227 1.231 1.224 1.229 1.203
Pavilion height, mm 3.509 3.499 3.465 3.449 3.448 3.439 3.453 3.489
Table, mm 4.556 4.555 4.556 4.534 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.275 0.286 0.308 0.302 0.299 0.316 0.295 0.286
 
Measurement as per OctoNus theory:
Crown angle, ° 34.80 34.72 35.00 34.75 – – – –
Pavilion angle, ° 40.95 40.91 40.83 40.86 – – – –
MIC, mm 8.025 Extra Facet Crown No –
Girdle to MIC, mm 0.013 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.00 N/A -2.41 EX
Crown,notch. 0.0, Negligible 0.6
Pavilion, ° -0.20 N/A -1.05 EX
Pavilion,notch. 0.1, Negligible 0.3