Illustrated report for brilliant

Polished Brilliant
Brilliant
05.01.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.93, 1.9342
Measurements 7.975 (7.966-7.988) x 4.921 / 0.002 (mm)
Spread -0.06ct, -3.26 %
AGS Spread -0.06 ct, -3.42%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.966 mm 7.988 mm 1.003 7.966 mm 7.988 mm 7.975 mm 4.921 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.177 mm 3.426 mm 4.524 mm 0.030 mm 0.319 mm 0.290 mm 0.169 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 7.975 7.966 7.988 0.28% GD EX
Radius, mm 3.986 3.982 3.994 0.012% – –
Crown angle, ° 34.33 34.15 34.61 0.46 EX EX
Pavilion angle, ° 40.78 40.66 40.85 0.19 EX EX
Total height, % 61.71 – – – VG –
Crown height, % 14.75 14.57 14.98 0.41 EX EX
Crown height bone, % 15.12 14.88 15.33 0.45 – –
Pavilion height, % 42.96 42.79 43.14 0.35 – –
Pavilion upperbone, % 42.96 42.72 43.12 0.40 – –
Table, % 56.73 56.65 56.84 0.20 EX EX
Culet, % 0.38 0.32 0.40 0.08 GD EX
Girdle height bezel, % 4.00 3.86 4.17 0.31 EX EX
Girdle height bone, % 3.63 3.37 3.93 0.56 – EX
Girdle height 2.12 1.80 2.45 0.65 N/A EX
valley, %
Star: 47.02: 46.17: 48.72: 2.55 EX VG
Upper ratio, % 52.98 53.83 51.28
Star angle, ° 20.61 20.05 20.94 0.89 – EX
Upper girdle 41.41 40.67 42.14 1.48 – VG
angle, °
Length girdle 76.09 74.96 77.09 2.13 -- EX
facet, %
Lower girdle angle / 41.98 41.76 42.10 0.34 – EX
Halves angle, °
Facet Twist, ° 0.58 0.22 1.28 1.06 – VG
Crown height, mm 1.177 1.162 1.195 0.033 EX EX
Pavilion height, mm 3.426 3.413 3.441 0.028 – –
Table, mm 4.524 4.518 4.533 0.016 EX EX
Culet, mm 0.030 0.026 0.032 0.007 GD EX
Girdle height bezel, mm 0.319 0.308 0.333 0.024 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.33 34.28 34.41 0.12 – –
Pavilion angle, ° 40.78 40.75 40.79 0.05 – –
Fish eye effect, ° 8.24 – – – N/A –
Culet through Crown Bezel, ° 10.37 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.35 0.10 0.06 -0.01 -0.05 -0.54 -0.55 0.05
Crown azimuths dev. from ideal 0.26 0.34 -0.17 0.69 0.54 0.35 0.75 0.30
Crown painting -0.42 -1.41 -0.15 -0.71 -2.08 -2.41 -0.76 -1.60
-0.34 -0.76 -0.59 -1.74 -0.73 -3.00 -0.15 -2.24
Pavilion painting -0.28 -0.18 0.34 -0.32 0.20 -0.29 0.34 -0.34
0.11 0.27 -0.21 0.06 -0.23 -0.21 0.37 0.04
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.15 ± 0.18 % 0.012 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.17 ± 0.16 % 0.014 ± 0.013 mm N/A
Table-Culet offset by table axis 0.29 ± 0.20 % 0.023 ± 0.016 mm N/A
Girdle to table-culet line offset 0.29 % 0.023 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.981 7.971 7.971 7.974 – – – –
Radius, mm 3.991 3.987 3.983 3.987 3.990 3.984 3.988 3.987
Crown angle, ° 34.61 34.26 34.15 34.29 34.20 34.31 34.45 34.37
Pavilion angle, ° 40.77 40.83 40.83 40.85 40.81 40.75 40.66 40.72
Total height, % – – – – – – – –
Crown height, % 14.70 14.64 14.57 14.67 14.87 14.83 14.98 14.77
Crown height bone, % 14.93 14.88 15.13 15.22 14.98 15.24 15.33 15.21
Pavilion height, % 43.14 43.09 42.97 42.95 42.93 42.80 42.79 42.98
Pavilion upperbone, % 43.11 43.06 42.92 43.03 42.79 42.91 42.72 43.12
Table, % 56.77 56.65 56.65 56.84 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.86 3.98 4.17 4.09 3.90 4.08 3.93 3.96
Girdle height bone, % 3.66 3.76 3.66 3.46 3.93 3.56 3.66 3.37
Girdle height 2.03 2.23 2.10 2.25 2.20 2.31 2.13 1.80
valley, % 2.18 2.45 2.05 2.01 2.16 2.26 1.84 1.94
Star: 48.72: 46.27: 46.74: 46.17: 46.50: 47.29: 46.77: 47.69:
Upper ratio, % 51.28 53.73 53.26 53.83 53.50 52.71 53.23 52.31
Star angle, ° 20.94 20.05 20.60 20.18 20.82 20.90 20.80 20.60
Upper girdle 41.70 41.44 40.80 40.84 41.81 41.84 41.07 41.48
angle, ° 40.67 40.72 41.28 41.66 41.52 41.90 41.74 42.14
Length girdle 75.80 75.90 77.03 77.00 75.97 76.05 77.03 76.47
facet, % 75.28 74.96 76.24 75.21 76.90 77.09 75.39 75.13
Lower girdle angle / 42.08 41.98 42.01 42.04 42.02 42.01 42.03 42.10
Halves angle, ° 42.00 41.92 41.98 41.99 41.76 41.78 42.02 41.98
Facet Twist, ° 0.58 0.22 0.26 0.68 0.56 0.86 1.28 0.22
Crown height, mm 1.172 1.167 1.162 1.170 1.186 1.182 1.195 1.178
Pavilion height, mm 3.441 3.437 3.427 3.425 3.424 3.413 3.413 3.428
Table, mm 4.528 4.518 4.518 4.533 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.308 0.317 0.333 0.326 0.311 0.325 0.314 0.316
 
Measurement as per OctoNus theory:
Crown angle, ° 34.41 34.28 34.30 34.33 – – – –
Pavilion angle, ° 40.79 40.79 40.75 40.78 – – – –
MIC, mm 7.963 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, ° -1.19 Digging N/A -3.00 EX
Crown,notch. 0.3, Small 0.8
Pavilion, ° -0.02 N/A 0.37 EX
Pavilion,notch. 0.0, Negligible 0.1