Illustrated report for brilliant

Polished Brilliant
Brilliant
01.12.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.71, 1.7090
Measurements 7.731 (7.721-7.740) x 4.684 / 0.000 (mm)
Spread 0.00ct, -0.16 %
AGS Spread -0.01 ct, -0.30%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.721 mm 7.740 mm 1.002 7.721 mm 7.740 mm 7.731 mm 4.684 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.116 mm 3.312 mm 4.442 mm 0.028 mm 0.256 mm 0.256 mm 0.127 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 7.731 7.721 7.740 0.24% GD EX
Radius, mm 3.864 3.858 3.872 0.014% – –
Crown angle, ° 34.19 33.96 34.44 0.48 EX EX
Pavilion angle, ° 40.69 40.53 40.79 0.27 EX EX
Total height, % 60.58 – – – EX –
Crown height, % 14.43 14.21 14.64 0.43 EX EX
Crown height bone, % 14.43 14.32 14.61 0.29 – –
Pavilion height, % 42.84 42.67 43.02 0.35 – –
Pavilion upperbone, % 42.84 42.60 43.13 0.54 – –
Table, % 57.46 57.35 57.62 0.27 EX EX
Culet, % 0.36 0.30 0.41 0.11 GD EX
Girdle height bezel, % 3.31 3.17 3.59 0.42 EX EX
Girdle height bone, % 3.31 3.03 3.53 0.50 – EX
Girdle height 1.65 1.42 1.85 0.44 N/A EX
valley, %
Star: 47.60: 46.63: 48.76: 2.13 EX VG
Upper ratio, % 52.40 53.37 51.24
Star angle, ° 20.28 19.64 20.84 1.20 – EX
Upper girdle 40.60 40.25 41.19 0.94 – EX
angle, °
Length girdle 77.05 75.30 78.54 3.24 EX EX
facet, %
Lower girdle angle / 41.87 41.68 42.02 0.33 – EX
Halves angle, °
Facet Twist, ° 0.42 0.19 0.89 0.70 – EX
Crown height, mm 1.116 1.099 1.132 0.033 EX EX
Pavilion height, mm 3.312 3.299 3.326 0.027 – –
Table, mm 4.442 4.434 4.455 0.021 EX EX
Culet, mm 0.028 0.023 0.032 0.008 GD EX
Girdle height bezel, mm 0.256 0.245 0.277 0.032 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.19 34.06 34.37 0.31 – –
Pavilion angle, ° 40.69 40.64 40.73 0.09 – –
Fish eye effect, ° 7.50 – – – N/A –
Culet through Crown Bezel, ° 12.37 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.00 0.37 0.50 0.37 0.13 -0.30 -0.28 -0.26
Crown azimuths dev. from ideal -0.40 -0.30 -0.44 -0.16 -0.11 -0.14 0.05 -0.54
Crown painting -0.99 0.26 -0.54 0.97 -0.22 0.21 -0.85 0.45
-0.09 -0.83 0.28 0.42 0.75 -0.28 0.21 -0.04
Pavilion painting -0.48 -0.25 0.16 -0.13 0.19 -0.10 0.11 -0.17
-0.03 0.36 -0.29 0.23 -0.40 0.13 -0.18 0.14
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.31 ± 0.19 % 0.024 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.15 ± 0.16 % 0.011 ± 0.013 mm N/A
Table-Culet offset by table axis 0.32 ± 0.20 % 0.025 ± 0.016 mm N/A
Girdle to table-culet line offset 0.32 % 0.025 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.736 7.730 7.734 7.731 – – – –
Radius, mm 3.865 3.864 3.867 3.863 3.870 3.865 3.866 3.866
Crown angle, ° 34.03 34.07 34.40 34.15 34.44 34.14 34.33 33.96
Pavilion angle, ° 40.67 40.79 40.79 40.76 40.73 40.67 40.59 40.53
Total height, % – – – – – – – –
Crown height, % 14.21 14.33 14.48 14.32 14.64 14.49 14.61 14.37
Crown height bone, % 14.41 14.40 14.33 14.53 14.61 14.43 14.43 14.32
Pavilion height, % 43.02 42.99 42.89 42.67 42.71 42.71 42.81 42.89
Pavilion upperbone, % 43.13 42.92 42.72 42.76 42.60 42.75 42.84 42.96
Table, % 57.62 57.38 57.35 57.47 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.35 3.26 3.21 3.59 3.23 3.38 3.17 3.32
Girdle height bone, % 3.03 3.27 3.53 3.29 3.37 3.40 3.31 3.29
Girdle height 1.42 1.43 1.63 1.68 1.65 1.85 1.80 1.63
valley, % 1.59 1.78 1.63 1.65 1.59 1.64 1.64 1.75
Star: 47.36: 46.63: 47.25: 47.91: 47.69: 48.76: 48.01: 47.20:
Upper ratio, % 52.64 53.37 52.75 52.09 52.31 51.24 51.99 52.80
Star angle, ° 20.12 19.98 19.99 20.68 20.55 20.48 20.84 19.64
Upper girdle 41.08 40.55 40.59 40.25 40.85 40.47 41.19 40.70
angle, ° 40.68 40.72 40.55 40.38 40.28 40.39 40.44 40.49
Length girdle 77.42 77.13 75.30 75.91 75.47 77.17 77.35 78.54
facet, % 77.20 78.13 77.91 78.08 78.21 77.53 75.92 75.56
Lower girdle angle / 41.96 41.99 42.00 41.97 42.02 41.90 41.95 41.95
Halves angle, ° 41.83 41.75 41.83 41.76 41.73 41.68 41.80 41.82
Facet Twist, ° 0.35 0.62 0.89 0.48 0.19 0.21 0.37 0.23
Crown height, mm 1.099 1.108 1.119 1.107 1.132 1.120 1.129 1.111
Pavilion height, mm 3.326 3.324 3.316 3.299 3.302 3.302 3.309 3.316
Table, mm 4.455 4.436 4.434 4.443 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.259 0.252 0.249 0.277 0.250 0.261 0.245 0.256
 
Measurement as per OctoNus theory:
Crown angle, ° 34.24 34.11 34.37 34.06 – – – –
Pavilion angle, ° 40.70 40.73 40.69 40.64 – – – –
MIC, mm 7.721 Extra Facet Crown No –
Girdle to MIC, mm 0.000 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° -0.02 N/A -0.99 EX
Crown,notch. 0.0, Negligible 0.3
Pavilion, ° -0.04 N/A -0.48 EX
Pavilion,notch. 0.0, Negligible 0.1