Illustrated report for brilliant

Polished Brilliant
Brilliant
26.02.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 4.18, 4.1861
Measurements 10.300 (10.280-10.311) x 6.372 / 0.001 (mm)
Spread -0.15ct, -3.72 %
AGS Spread -0.16 ct, -3.88%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
10.280 mm 10.311 mm 1.003 10.280 mm 10.311 mm 10.300 mm 6.372 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.532 mm 4.423 mm 5.854 mm 0.034 mm 0.417 mm 0.402 mm 0.238 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 10.300 10.280 10.311 0.31% GD EX
Radius, mm 5.148 5.138 5.159 0.021% – –
Crown angle, ° 34.53 34.35 34.70 0.34 EX EX
Pavilion angle, ° 40.77 40.63 41.00 0.37 EX EX
Total height, % 61.86 – – – VG –
Crown height, % 14.88 14.79 15.03 0.24 EX EX
Crown height bone, % 15.01 14.84 15.35 0.51 – –
Pavilion height, % 42.94 42.76 43.11 0.35 – –
Pavilion upperbone, % 42.95 42.76 43.08 0.32 – –
Table, % 56.84 56.72 56.97 0.25 EX EX
Culet, % 0.33 0.28 0.38 0.10 GD EX
Girdle height bezel, % 4.04 3.85 4.29 0.45 EX EX
Girdle height bone, % 3.90 3.53 4.23 0.70 – VG
Girdle height 2.31 2.06 2.65 0.59 N/A EX
valley, %
Star: 47.12: 46.72: 47.73: 1.01 EX EX
Upper ratio, % 52.88 53.28 52.27
Star angle, ° 20.86 20.41 21.21 0.80 – EX
Upper girdle 41.17 40.70 41.78 1.09 – VG
angle, °
Length girdle 76.30 74.75 77.59 2.84 EX EX
facet, %
Lower girdle angle / 41.98 41.81 42.26 0.44 – EX
Halves angle, °
Facet Twist, ° 0.21 0.02 0.52 0.50 – EX
Crown height, mm 1.532 1.523 1.548 0.025 EX EX
Pavilion height, mm 4.423 4.405 4.441 0.036 – –
Table, mm 5.854 5.842 5.868 0.025 EX EX
Culet, mm 0.034 0.028 0.039 0.010 GD EX
Girdle height bezel, mm 0.417 0.396 0.442 0.046 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.53 34.50 34.57 0.07 – –
Pavilion angle, ° 40.77 40.71 40.85 0.14 – –
Fish eye effect, ° 8.12 – – – N/A –
Culet through Crown Bezel, ° 10.01 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.03 -0.12 0.19 0.14 0.20 0.03 0.01 -0.03
Crown azimuths dev. from ideal -0.53 0.29 -0.03 -0.01 -0.01 -0.16 0.06 -0.10
Crown painting -0.77 -0.71 0.12 -0.14 -1.37 -1.05 -0.09 -0.20
-0.52 -0.46 -0.30 0.06 -1.06 -0.22 -0.21 -0.67
Pavilion painting 0.18 -0.31 -0.04 -0.49 0.42 -0.26 0.15 -0.03
-0.01 0.01 -0.21 0.12 -0.16 -0.60 0.07 -0.06
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.23 ± 0.15 % 0.024 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.19 ± 0.13 % 0.019 ± 0.013 mm N/A
Table-Culet offset by table axis 0.17 ± 0.16 % 0.017 ± 0.017 mm N/A
Girdle to table-culet line offset 0.17 % 0.017 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 10.295 10.301 10.308 10.307 – – – –
Radius, mm 5.146 5.151 5.153 5.155 5.148 5.150 5.155 5.151
Crown angle, ° 34.48 34.70 34.58 34.60 34.59 34.35 34.41 34.54
Pavilion angle, ° 41.00 40.68 40.66 40.63 40.69 40.78 40.94 40.78
Total height, % – – – – – – – –
Crown height, % 14.82 14.81 14.87 15.03 15.01 14.89 14.79 14.81
Crown height bone, % 14.94 14.88 15.35 15.03 15.16 14.84 14.97 14.94
Pavilion height, % 43.11 42.76 42.88 42.99 42.97 42.95 43.11 42.77
Pavilion upperbone, % 42.98 42.76 42.99 42.93 43.01 43.01 43.08 42.84
Table, % 56.72 56.87 56.97 56.79 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.94 4.29 4.12 3.85 3.88 4.03 3.96 4.29
Girdle height bone, % 3.94 4.23 3.53 3.89 3.69 4.01 3.82 4.08
Girdle height 2.10 2.47 2.65 2.60 2.14 2.06 2.27 2.25
valley, % 2.14 2.15 2.36 2.35 2.11 2.45 2.63 2.19
Star: 47.73: 46.74: 47.08: 46.72: 46.80: 47.65: 47.08: 47.13:
Upper ratio, % 52.27 53.26 52.92 53.28 53.20 52.35 52.92 52.87
Star angle, ° 20.41 21.13 21.21 20.45 20.91 20.59 21.03 21.11
Upper girdle 41.66 41.49 41.04 41.01 41.78 41.66 40.77 40.93
angle, ° 41.30 41.01 40.79 40.70 41.34 41.15 40.95 41.08
Length girdle 76.36 76.26 76.37 76.23 75.39 75.23 75.45 75.86
facet, % 74.75 75.40 77.59 77.58 77.03 76.97 77.57 76.80
Lower girdle angle / 42.26 41.94 41.81 41.82 41.93 41.88 41.86 41.85
Halves angle, ° 41.99 42.01 41.97 42.08 42.20 42.07 41.91 42.11
Facet Twist, ° 0.52 0.44 0.19 0.11 0.17 0.16 0.08 0.02
Crown height, mm 1.526 1.525 1.531 1.548 1.546 1.534 1.523 1.525
Pavilion height, mm 4.440 4.405 4.416 4.428 4.426 4.423 4.441 4.405
Table, mm 5.842 5.857 5.868 5.849 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.405 0.442 0.424 0.396 0.400 0.415 0.408 0.442
 
Measurement as per OctoNus theory:
Crown angle, ° 34.53 34.53 34.50 34.57 – – – –
Pavilion angle, ° 40.85 40.73 40.80 40.71 – – – –
MIC, mm 10.279 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, ° -0.47 Digging N/A -1.37 EX
Crown,notch. 0.1, Very small 0.4
Pavilion, ° -0.08 N/A -0.60 EX
Pavilion,notch. 0.0, Negligible 0.2