Illustrated report for brilliant

Polished Brilliant
Brilliant
06.04.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.50, 1.5077
Measurements 7.439 (7.425-7.449) x 4.484 / 0.006 (mm)
Spread 0.01ct, 0.77 %
AGS Spread 0.01 ct, 0.64%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.425 mm 7.449 mm 1.003 7.425 mm 7.449 mm 7.439 mm 4.484 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.070 mm 3.186 mm 4.289 mm 0.030 mm 0.227 mm 0.233 mm 0.107 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 7.439 7.425 7.449 0.33% GD EX
Radius, mm 3.718 3.709 3.730 0.020% – –
Crown angle, ° 34.18 34.07 34.31 0.24 EX EX
Pavilion angle, ° 40.71 40.50 40.94 0.44 EX EX
Total height, % 60.27 – – – EX –
Crown height, % 14.39 14.22 14.63 0.41 EX EX
Crown height bone, % 14.38 14.24 14.51 0.27 – –
Pavilion height, % 42.83 42.60 43.05 0.45 – –
Pavilion upperbone, % 42.76 42.61 43.01 0.40 – –
Table, % 57.65 57.50 57.85 0.35 EX EX
Culet, % 0.40 0.31 0.47 0.16 GD EX
Girdle height bezel, % 3.05 2.60 3.40 0.80 EX VG
Girdle height bone, % 3.13 2.85 3.42 0.57 – EX
Girdle height 1.44 1.14 1.81 0.67 N/A EX
valley, %
Star: 48.45: 47.59: 49.37: 1.78 EX EX
Upper ratio, % 51.55 52.41 50.63
Star angle, ° 20.59 19.97 21.11 1.14 – EX
Upper girdle 40.72 40.13 41.17 1.03 – VG
angle, °
Length girdle 77.40 76.28 78.71 2.43 EX EX
facet, %
Lower girdle angle / 41.84 41.60 42.19 0.59 – EX
Halves angle, °
Facet Twist, ° 0.28 0.00 0.61 0.61 – EX
Crown height, mm 1.070 1.058 1.088 0.030 EX EX
Pavilion height, mm 3.186 3.169 3.202 0.033 – –
Table, mm 4.289 4.277 4.303 0.026 EX EX
Culet, mm 0.030 0.023 0.035 0.012 GD EX
Girdle height bezel, mm 0.227 0.193 0.253 0.059 EX VG
Measurement as per OctoNus theory:
Crown angle, ° 34.18 34.10 34.24 0.14 – –
Pavilion angle, ° 40.71 40.66 40.77 0.10 – –
Fish eye effect, ° 7.47 – – – N/A –
Culet through Crown Bezel, ° 12.87 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.37 0.33 0.46 0.14 0.00 -0.39 -0.42 -0.26
Crown azimuths dev. from ideal -0.27 -0.32 0.23 0.13 -0.57 -0.23 -0.47 -0.39
Crown painting -0.70 0.06 -0.28 -0.49 -0.21 -0.01 0.84 0.43
-0.67 -0.40 0.72 -0.10 0.14 0.09 -0.81 0.17
Pavilion painting 0.20 -0.29 0.39 -0.44 0.37 -0.08 0.26 -0.31
0.23 -0.01 0.23 0.21 -1.02 0.15 0.09 -0.35
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.24 ± 0.19 % 0.018 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.11 ± 0.17 % 0.008 ± 0.012 mm N/A
Table-Culet offset by table axis 0.32 ± 0.21 % 0.024 ± 0.015 mm N/A
Girdle to table-culet line offset 0.32 % 0.024 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.436 7.445 7.449 7.444 – – – –
Radius, mm 3.719 3.715 3.723 3.723 3.715 3.729 3.724 3.719
Crown angle, ° 34.09 34.26 34.07 34.31 34.11 34.22 34.23 34.13
Pavilion angle, ° 40.50 40.53 40.74 40.84 40.94 40.79 40.62 40.69
Total height, % – – – – – – – –
Crown height, % 14.22 14.31 14.39 14.41 14.39 14.63 14.46 14.28
Crown height bone, % 14.37 14.51 14.33 14.40 14.38 14.37 14.41 14.24
Pavilion height, % 42.66 42.60 42.83 42.84 42.93 43.05 42.81 42.94
Pavilion upperbone, % 42.62 42.75 42.67 42.97 42.77 42.73 43.01 42.61
Table, % 57.66 57.50 57.60 57.85 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.40 3.36 3.06 3.02 2.95 2.60 3.01 3.05
Girdle height bone, % 3.29 3.01 3.27 2.91 3.13 3.18 2.85 3.42
Girdle height 1.54 1.68 1.74 1.53 1.42 1.49 1.37 1.14
valley, % 1.40 1.20 1.24 1.47 1.40 1.17 1.45 1.81
Star: 48.42: 47.59: 48.27: 48.40: 49.37: 47.68: 48.72: 49.15:
Upper ratio, % 51.58 52.41 51.73 51.60 50.63 52.32 51.28 50.85
Star angle, ° 20.40 19.97 20.91 20.60 21.11 20.50 20.70 20.53
Upper girdle 41.11 40.93 40.87 40.68 40.82 40.70 40.13 40.68
angle, ° 40.85 40.68 40.41 40.62 40.54 40.80 41.17 40.55
Length girdle 78.71 78.66 77.49 77.49 77.61 76.28 77.11 76.91
facet, % 77.57 77.35 77.81 77.44 77.46 76.78 76.76 76.98
Lower girdle angle / 41.63 41.65 41.61 41.86 41.85 41.94 42.00 42.19
Halves angle, ° 41.97 41.93 41.89 41.86 41.76 41.89 41.77 41.60
Facet Twist, ° 0.60 0.61 0.19 0.03 0.52 0.20 0.00 0.09
Crown height, mm 1.058 1.065 1.070 1.072 1.071 1.088 1.075 1.063
Pavilion height, mm 3.173 3.169 3.186 3.187 3.194 3.202 3.184 3.194
Table, mm 4.289 4.277 4.284 4.303 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.253 0.250 0.227 0.224 0.219 0.193 0.224 0.227
 
Measurement as per OctoNus theory:
Crown angle, ° 34.10 34.24 34.15 34.22 – – – –
Pavilion angle, ° 40.72 40.66 40.68 40.77 – – – –
MIC, mm 7.419 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, ° -0.08 N/A 0.84 EX
Crown,notch. 0.0, Negligible 0.2
Pavilion, ° -0.02 N/A -1.02 EX
Pavilion,notch. 0.0, Negligible 0.3