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 1.79, 1.7914
Measurements 7.787 (7.769-7.796) x 4.810 / 0.001 (mm)
Spread -0.05ct, -2.76 %
AGS Spread -0.05 ct, -2.91%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.769 mm 7.796 mm 1.003 7.769 mm 7.796 mm 7.787 mm 4.810 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.179 mm 3.341 mm 4.345 mm 0.027 mm 0.291 mm 0.296 mm 0.161 mm
Appraiser title Lexus_Opt_12FEB2011
Overall cut quality N/A
Symmetry appraiser title Symmetry
Overall symmetry quality EX
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 7.787 7.769 7.796 0.34% GD EX
Radius, mm 3.892 3.880 3.902 0.022% – –
Crown angle, ° 34.44 34.35 34.54 0.19 EX EX
Pavilion angle, ° 40.76 40.60 40.95 0.35 EX EX
Total height, % 61.78 – – – VG –
Crown height, % 15.14 14.97 15.44 0.46 EX EX
Crown height bone, % 15.12 14.87 15.26 0.39 – –
Pavilion height, % 42.90 42.67 43.11 0.44 – –
Pavilion upperbone, % 42.86 42.64 43.08 0.44 – –
Table, % 55.80 55.45 56.01 0.57 EX EX
Culet, % 0.34 0.28 0.38 0.09 GD EX
Girdle height bezel, % 3.74 3.46 3.91 0.46 EX EX
Girdle height bone, % 3.80 3.60 4.01 0.41 – EX
Girdle height 2.06 1.74 2.36 0.62 N/A EX
valley, %
Star: 47.39: 46.59: 48.22: 1.63 EX EX
Upper ratio, % 52.61 53.41 51.78
Star angle, ° 21.23 20.90 21.72 0.83 – EX
Upper girdle 40.62 40.22 41.18 0.95 – EX
angle, °
Length girdle 76.42 75.07 77.52 2.44 EX EX
facet, %
Lower girdle angle / 41.95 41.72 42.17 0.45 – EX
Halves angle, °
Facet Twist, ° 0.28 0.07 0.55 0.48 – EX
Crown height, mm 1.179 1.166 1.202 0.036 EX EX
Pavilion height, mm 3.341 3.323 3.357 0.034 – –
Table, mm 4.345 4.317 4.362 0.044 EX EX
Culet, mm 0.027 0.022 0.029 0.007 GD EX
Girdle height bezel, mm 0.291 0.269 0.305 0.035 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.44 34.41 34.47 0.06 – –
Pavilion angle, ° 40.76 40.71 40.84 0.12 – –
Fish eye effect, ° 8.69 – – – N/A –
Culet through Crown Bezel, ° 9.20 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.13 -0.05 -0.03 0.05 0.06 0.09 -0.03 -0.14
Crown azimuths dev. from ideal -0.05 0.18 -0.57 -0.32 0.46 0.20 -0.08 0.33
Crown painting 0.29 -0.18 0.60 0.10 -0.29 -0.15 -0.23 -0.41
0.26 -0.20 -0.02 0.56 -0.63 -0.15 0.12 0.66
Pavilion painting 0.16 -0.30 0.22 -0.26 0.19 -0.05 0.20 -0.06
0.11 -0.06 0.19 0.00 0.07 0.05 0.06 0.06
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.32 ± 0.19 % 0.025 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.22 ± 0.16 % 0.017 ± 0.013 mm N/A
Table-Culet offset by table axis 0.51 ± 0.20 % 0.039 ± 0.016 mm N/A
Girdle to table-culet line offset 0.51 % 0.039 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.773 7.795 7.789 7.789 – – – –
Radius, mm 3.890 3.896 3.895 3.896 3.883 3.899 3.894 3.894
Crown angle, ° 34.54 34.39 34.49 34.51 34.40 34.44 34.39 34.35
Pavilion angle, ° 40.95 40.65 40.69 40.60 40.72 40.77 40.89 40.83
Total height, % – – – – – – – –
Crown height, % 15.44 15.30 15.21 15.07 15.01 14.97 14.99 15.10
Crown height bone, % 15.22 15.24 15.15 15.07 15.09 14.87 15.06 15.26
Pavilion height, % 42.88 42.67 42.89 42.96 42.99 43.11 42.93 42.76
Pavilion upperbone, % 42.64 42.77 42.85 43.02 43.08 42.90 42.72 42.90
Table, % 55.45 55.79 55.95 56.01 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.46 3.81 3.68 3.75 3.78 3.69 3.86 3.91
Girdle height bone, % 3.91 3.77 3.78 3.69 3.60 4.01 3.99 3.62
Girdle height 1.94 2.36 2.17 2.05 1.81 2.24 1.90 2.13
valley, % 1.79 1.95 2.17 2.02 2.31 2.31 2.13 1.74
Star: 47.18: 46.95: 48.22: 47.41: 47.40: 46.59: 47.99: 47.34:
Upper ratio, % 52.82 53.05 51.78 52.59 52.60 53.41 52.01 52.66
Star angle, ° 21.15 21.72 21.41 21.03 20.90 21.03 21.01 21.57
Upper girdle 40.43 40.22 40.26 40.39 40.97 40.77 41.02 40.65
angle, ° 41.18 40.67 40.43 40.35 40.87 40.80 40.46 40.52
Length girdle 76.84 77.52 76.21 76.29 75.99 76.75 76.65 76.59
facet, % 75.07 75.67 75.90 75.91 77.14 76.98 76.26 76.88
Lower girdle angle / 42.04 41.79 41.88 41.88 41.89 41.72 41.83 41.79
Halves angle, ° 42.08 41.96 42.00 42.11 42.00 41.89 42.12 42.17
Facet Twist, ° 0.07 0.22 0.55 0.38 0.39 0.10 0.07 0.47
Crown height, mm 1.202 1.191 1.184 1.173 1.169 1.166 1.167 1.176
Pavilion height, mm 3.339 3.323 3.340 3.345 3.347 3.357 3.343 3.330
Table, mm 4.317 4.344 4.357 4.362 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.269 0.296 0.286 0.292 0.294 0.288 0.300 0.305
 
Measurement as per OctoNus theory:
Crown angle, ° 34.47 34.41 34.44 34.43 – – – –
Pavilion angle, ° 40.84 40.71 40.79 40.71 – – – –
MIC, mm 7.768 Extra Facet Crown No –
Girdle to MIC, mm 0.001 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.02 N/A 0.66 EX
Crown,notch. 0.0, Negligible 0.2
Pavilion, ° 0.04 N/A -0.30 EX
Pavilion,notch. 0.0, Negligible 0.1