Illustrated report for brilliant

Polished Brilliant
Brilliant
11.10.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.93, 1.9377
Measurements 8.060 (8.045-8.070) x 4.903 / 0.006 (mm)
Spread 0.00ct, -0.22 %
AGS Spread -0.01 ct, -0.37%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.045 mm 8.070 mm 1.003 8.045 mm 8.070 mm 8.060 mm 4.903 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.165 mm 3.475 mm 4.603 mm 0.028 mm 0.262 mm 0.263 mm 0.130 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 8.060 8.045 8.070 0.32% GD EX
Radius, mm 4.028 4.018 4.038 0.021% – –
Crown angle, ° 34.00 33.80 34.23 0.44 EX EX
Pavilion angle, ° 40.88 40.74 41.03 0.29 EX EX
Total height, % 60.83 – – – EX –
Crown height, % 14.46 14.25 14.62 0.37 EX EX
Crown height bone, % 14.45 14.30 14.59 0.29 – –
Pavilion height, % 43.11 42.95 43.28 0.33 – –
Pavilion upperbone, % 43.11 42.90 43.43 0.53 – –
Table, % 57.10 56.91 57.29 0.38 EX EX
Culet, % 0.34 0.25 0.41 0.16 GD EX
Girdle height bezel, % 3.25 3.12 3.50 0.38 EX EX
Girdle height bone, % 3.27 3.02 3.55 0.53 – EX
Girdle height 1.61 1.35 1.92 0.57 N/A EX
valley, %
Star: 49.06: 48.49: 50.10: 1.61 EX EX
Upper ratio, % 50.94 51.51 49.90
Star angle, ° 20.74 20.58 20.93 0.34 – EX
Upper girdle 40.48 40.00 40.92 0.92 – EX
angle, °
Length girdle 75.59 74.38 76.88 2.51 -- EX
facet, %
Lower girdle angle / 42.11 41.86 42.44 0.58 – EX
Halves angle, °
Facet Twist, ° 0.37 0.13 0.76 0.63 – EX
Crown height, mm 1.165 1.149 1.179 0.030 EX EX
Pavilion height, mm 3.475 3.462 3.488 0.027 – –
Table, mm 4.603 4.587 4.618 0.030 EX EX
Culet, mm 0.028 0.021 0.033 0.013 GD EX
Girdle height bezel, mm 0.262 0.251 0.282 0.031 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.00 33.83 34.09 0.26 – –
Pavilion angle, ° 40.88 40.81 40.94 0.13 – –
Fish eye effect, ° 8.50 – – – N/A –
Culet through Crown Bezel, ° 12.09 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.11 -0.06 -0.13 0.00 0.04 0.03 0.09 -0.14
Crown azimuths dev. from ideal 0.65 0.63 0.23 0.13 0.35 0.19 0.25 0.23
Crown painting 0.86 -0.25 0.48 -0.32 -0.12 -0.15 -0.14 -0.09
-1.00 -0.16 0.99 0.89 -0.38 0.50 -0.14 -0.29
Pavilion painting -0.25 0.20 -0.26 0.33 -0.40 0.22 -0.33 0.26
-0.25 0.23 -0.11 -0.02 -0.11 0.14 -0.35 -0.02
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.07 ± 0.18 % 0.006 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.21 ± 0.16 % 0.017 ± 0.013 mm N/A
Table-Culet offset by table axis 0.27 ± 0.19 % 0.022 ± 0.016 mm N/A
Girdle to table-culet line offset 0.27 % 0.022 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.061 8.056 8.058 8.068 – – – –
Radius, mm 4.032 4.030 4.031 4.036 4.029 4.025 4.027 4.032
Crown angle, ° 33.86 34.07 34.02 34.23 33.80 33.99 34.11 33.95
Pavilion angle, ° 40.85 40.84 40.74 40.76 40.97 41.03 41.02 40.85
Total height, % – – – – – – – –
Crown height, % 14.59 14.62 14.38 14.40 14.25 14.43 14.45 14.56
Crown height bone, % 14.58 14.52 14.37 14.34 14.48 14.30 14.59 14.42
Pavilion height, % 43.01 43.02 42.95 43.09 43.23 43.28 43.25 43.06
Pavilion upperbone, % 43.04 42.95 42.90 43.19 43.19 43.43 43.22 42.93
Table, % 56.97 56.91 57.25 57.29 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.23 3.18 3.50 3.33 3.34 3.12 3.12 3.21
Girdle height bone, % 3.21 3.35 3.55 3.30 3.16 3.10 3.02 3.47
Girdle height 1.50 1.53 1.67 1.73 1.92 1.83 1.58 1.48
valley, % 1.63 1.63 1.35 1.35 1.49 1.51 1.74 1.78
Star: 49.42: 49.46: 48.49: 48.95: 50.10: 48.55: 48.90: 48.60:
Upper ratio, % 50.58 50.54 51.51 51.05 49.90 51.45 51.10 51.40
Star angle, ° 20.93 20.79 20.75 20.59 20.58 20.72 20.84 20.70
Upper girdle 40.31 40.59 40.48 40.86 40.49 40.71 40.92 40.69
angle, ° 40.85 40.32 40.36 40.03 40.71 40.24 40.13 40.00
Length girdle 76.21 75.81 76.88 76.09 76.15 76.10 75.99 75.80
facet, % 75.32 74.80 74.83 74.38 75.06 75.32 75.64 75.06
Lower girdle angle / 42.14 42.04 42.00 41.97 41.91 41.86 42.12 42.21
Halves angle, ° 42.13 42.13 42.44 42.35 42.22 42.12 42.05 42.01
Facet Twist, ° 0.76 0.69 0.36 0.13 0.31 0.16 0.16 0.37
Crown height, mm 1.176 1.179 1.159 1.161 1.149 1.163 1.165 1.173
Pavilion height, mm 3.467 3.468 3.462 3.473 3.485 3.488 3.486 3.471
Table, mm 4.591 4.587 4.614 4.618 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.260 0.256 0.282 0.268 0.269 0.251 0.251 0.259
 
Measurement as per OctoNus theory:
Crown angle, ° 33.83 34.03 34.07 34.09 – – – –
Pavilion angle, ° 40.91 40.94 40.88 40.81 – – – –
MIC, mm 8.038 Extra Facet Crown No –
Girdle to MIC, mm 0.006 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.04 N/A -1.00 EX
Crown,notch. 0.0, Negligible 0.3
Pavilion, ° -0.05 N/A -0.40 EX
Pavilion,notch. 0.0, Negligible 0.1