Illustrated report for brilliant

Polished Brilliant
Brilliant
13.10.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.59, 1.5912
Measurements 7.509 (7.483-7.529) x 4.612 / 0.002 (mm)
Spread -0.03ct, -1.78 %
AGS Spread -0.03 ct, -1.92%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.483 mm 7.529 mm 1.006 7.483 mm 7.529 mm 7.509 mm 4.612 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.121 mm 3.227 mm 4.231 mm 0.029 mm 0.264 mm 0.254 mm 0.131 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 7.509 7.483 7.529 0.62% -- VG
Radius, mm 3.753 3.740 3.765 0.025% – –
Crown angle, ° 34.42 34.02 34.78 0.75 EX VG
Pavilion angle, ° 40.80 40.56 40.99 0.43 EX EX
Total height, % 61.42 – – – VG –
Crown height, % 14.92 14.26 15.39 1.13 EX VG
Crown height bone, % 15.05 14.47 15.60 1.14 – –
Pavilion height, % 42.98 42.64 43.42 0.77 – –
Pavilion upperbone, % 42.98 42.63 43.37 0.74 – –
Table, % 56.35 55.96 56.75 0.79 EX EX
Culet, % 0.39 0.30 0.45 0.14 GD EX
Girdle height bezel, % 3.52 3.17 3.75 0.57 EX EX
Girdle height bone, % 3.39 3.19 3.61 0.42 – EX
Girdle height 1.75 1.39 2.00 0.61 N/A EX
valley, %
Star: 49.49: 48.44: 50.47: 2.02 EX VG
Upper ratio, % 50.51 51.56 49.53
Star angle, ° 21.37 20.37 22.14 1.78 – VG
Upper girdle 41.25 40.16 42.04 1.88 – VG
angle, °
Length girdle 77.04 74.69 79.06 4.37 EX VG
facet, %
Lower girdle angle / 41.98 41.81 42.19 0.38 – EX
Halves angle, °
Facet Twist, ° 0.72 0.32 1.46 1.15 – VG
Crown height, mm 1.121 1.071 1.156 0.085 EX VG
Pavilion height, mm 3.227 3.202 3.260 0.058 – –
Table, mm 4.231 4.203 4.262 0.059 EX EX
Culet, mm 0.029 0.023 0.034 0.011 GD EX
Girdle height bezel, mm 0.264 0.238 0.281 0.043 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.42 34.39 34.44 0.05 – –
Pavilion angle, ° 40.80 40.78 40.83 0.05 – –
Fish eye effect, ° 8.58 – – – N/A –
Culet through Crown Bezel, ° 10.10 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.00 -0.35 -0.47 -0.48 -0.28 0.62 0.78 0.72
Crown azimuths dev. from ideal 0.35 0.90 0.50 0.14 0.08 0.02 -0.65 0.44
Crown painting -1.08 -1.19 -0.24 -1.28 0.11 -0.95 0.53 0.37
-0.96 -1.10 -0.16 -0.80 0.20 -1.09 1.05 -1.02
Pavilion painting -0.47 -0.09 0.06 0.04 -0.16 0.28 -0.51 -0.43
-0.51 -0.22 0.28 -0.44 0.31 -0.66 0.14 0.16
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.11 ± 0.19 % 0.008 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.48 ± 0.17 % 0.036 ± 0.013 mm N/A
Table-Culet offset by table axis 0.56 ± 0.21 % 0.042 ± 0.015 mm N/A
Girdle to table-culet line offset 0.56 % 0.042 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.525 7.498 7.504 7.517 – – – –
Radius, mm 3.761 3.753 3.752 3.756 3.763 3.745 3.752 3.761
Crown angle, ° 34.02 34.33 34.60 34.78 34.76 34.55 34.27 34.07
Pavilion angle, ° 40.99 40.89 40.75 40.76 40.56 40.68 40.91 40.89
Total height, % – – – – – – – –
Crown height, % 14.26 14.68 14.92 15.16 15.39 15.17 15.13 14.67
Crown height bone, % 14.65 15.05 15.21 15.23 15.60 15.34 14.88 14.47
Pavilion height, % 43.42 43.12 42.75 42.82 42.68 42.64 43.12 43.26
Pavilion upperbone, % 43.37 42.90 42.70 42.89 42.63 42.73 43.30 43.34
Table, % 56.75 56.27 55.96 56.41 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.74 3.62 3.75 3.43 3.35 3.61 3.17 3.49
Girdle height bone, % 3.40 3.47 3.52 3.31 3.19 3.36 3.24 3.61
Girdle height 1.93 1.89 1.94 1.88 1.95 1.78 1.60 1.74
valley, % 1.40 1.81 1.80 1.52 1.39 1.49 1.89 2.00
Star: 48.44: 48.82: 49.13: 49.20: 50.20: 50.47: 50.25: 49.38:
Upper ratio, % 51.56 51.18 50.87 50.80 49.80 49.53 49.75 50.62
Star angle, ° 20.37 21.39 21.42 21.85 21.90 22.14 20.84 21.08
Upper girdle 41.23 41.40 41.51 41.70 41.30 41.71 41.18 40.83
angle, ° 42.04 41.66 41.31 41.44 40.80 40.92 40.16 40.85
Length girdle 78.03 76.44 77.66 76.40 76.83 76.37 76.11 74.69
facet, % 76.47 76.12 75.99 77.93 77.86 79.06 78.10 78.54
Lower girdle angle / 42.19 42.09 42.05 42.00 41.83 41.92 41.99 41.91
Halves angle, ° 41.81 41.84 41.88 41.94 42.13 42.09 42.02 42.06
Facet Twist, ° 0.32 1.21 0.93 0.59 0.33 0.64 1.46 0.32
Crown height, mm 1.071 1.102 1.121 1.139 1.156 1.139 1.136 1.102
Pavilion height, mm 3.260 3.238 3.210 3.216 3.205 3.202 3.238 3.249
Table, mm 4.262 4.226 4.203 4.236 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.281 0.272 0.281 0.258 0.252 0.271 0.238 0.262
 
Measurement as per OctoNus theory:
Crown angle, ° 34.39 34.44 34.44 34.42 – – – –
Pavilion angle, ° 40.78 40.79 40.83 40.82 – – – –
MIC, mm 7.481 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, ° -0.48 Digging N/A -1.28 EX
Crown,notch. 0.1, Very small 0.3
Pavilion, ° -0.14 N/A -0.66 EX
Pavilion,notch. 0.0, Negligible 0.2