Illustrated report for brilliant

Polished Brilliant
Brilliant
20.01.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.58, 1.5791
Measurements 7.493 (7.474-7.507) x 4.575 / 0.001 (mm)
Spread -0.03ct, -1.69 %
AGS Spread -0.03 ct, -1.83%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.474 mm 7.507 mm 1.004 7.474 mm 7.507 mm 7.493 mm 4.575 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.077 mm 3.219 mm 4.306 mm 0.023 mm 0.279 mm 0.281 mm 0.155 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 medium errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 7.493 7.474 7.507 0.45% GD EX
Radius, mm 3.745 3.734 3.756 0.022% – –
Crown angle, ° 34.06 33.86 34.19 0.33 EX EX
Pavilion angle, ° 40.76 40.68 40.84 0.16 EX EX
Total height, % 61.06 – – – EX –
Crown height, % 14.37 14.24 14.58 0.34 EX EX
Crown height bone, % 14.34 14.05 14.64 0.59 – –
Pavilion height, % 42.96 42.77 43.19 0.42 – –
Pavilion upperbone, % 42.97 42.78 43.12 0.34 – –
Table, % 57.47 57.30 57.61 0.30 EX EX
Culet, % 0.31 0.23 0.36 0.13 GD EX
Girdle height bezel, % 3.73 3.57 3.86 0.29 EX EX
Girdle height bone, % 3.75 3.49 3.97 0.48 – EX
Girdle height 2.07 1.82 2.40 0.58 N/A EX
valley, %
Star: 47.43: 46.89: 48.28: 1.39 EX EX
Upper ratio, % 52.57 53.11 51.72
Star angle, ° 20.27 19.97 20.86 0.89 – EX
Upper girdle 40.41 39.95 40.74 0.79 – EX
angle, °
Length girdle 76.34 74.56 77.80 3.23 EX EX
facet, %
Lower girdle angle / 41.97 41.82 42.10 0.28 – EX
Halves angle, °
Facet Twist, ° 0.22 0.05 0.43 0.39 – EX
Crown height, mm 1.077 1.067 1.092 0.025 EX EX
Pavilion height, mm 3.219 3.205 3.236 0.032 – –
Table, mm 4.306 4.294 4.316 0.023 EX EX
Culet, mm 0.023 0.017 0.027 0.009 GD EX
Girdle height bezel, mm 0.279 0.268 0.289 0.021 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.06 33.99 34.12 0.14 – –
Pavilion angle, ° 40.76 40.74 40.80 0.06 – –
Fish eye effect, ° 7.76 – – – N/A –
Culet through Crown Bezel, ° 12.15 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.00 0.04 0.03 -0.04 0.04 -0.04 -0.07 -0.01
Crown azimuths dev. from ideal -0.38 -0.25 -0.14 -0.46 0.00 -0.09 0.08 0.22
Crown painting -0.30 0.34 0.14 0.49 0.50 -0.14 0.26 -0.02
0.14 0.43 -0.23 0.33 -0.30 0.15 -0.47 0.68
Pavilion painting 0.10 -0.16 0.11 -0.07 0.16 0.05 -0.01 -0.69
0.25 -0.05 0.15 0.03 -0.16 -0.19 -0.19 -0.06
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.12 ± 0.19 % 0.009 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.23 ± 0.17 % 0.017 ± 0.012 mm N/A
Table-Culet offset by table axis 0.33 ± 0.21 % 0.025 ± 0.015 mm N/A
Girdle to table-culet line offset 0.33 % 0.025 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.482 7.500 7.496 7.497 – – – –
Radius, mm 3.736 3.753 3.745 3.747 3.745 3.747 3.750 3.749
Crown angle, ° 34.19 34.17 34.11 34.14 34.05 33.92 33.86 34.03
Pavilion angle, ° 40.81 40.68 40.73 40.84 40.79 40.81 40.77 40.68
Total height, % – – – – – – – –
Crown height, % 14.58 14.40 14.37 14.24 14.24 14.36 14.35 14.43
Crown height bone, % 14.54 14.26 14.29 14.05 14.29 14.33 14.31 14.64
Pavilion height, % 42.91 42.92 42.96 43.19 43.05 42.98 42.88 42.77
Pavilion upperbone, % 43.03 42.90 43.12 43.12 43.03 42.87 42.78 42.90
Table, % 57.30 57.54 57.44 57.61 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.57 3.74 3.73 3.62 3.77 3.71 3.83 3.86
Girdle height bone, % 3.49 3.90 3.65 3.89 3.74 3.86 3.97 3.52
Girdle height 1.90 2.13 2.20 2.10 1.91 1.86 2.11 2.23
valley, % 2.02 2.02 2.13 2.10 2.40 2.33 1.94 1.82
Star: 47.46: 47.15: 47.35: 48.28: 47.41: 46.89: 47.41: 47.47:
Upper ratio, % 52.54 52.85 52.65 51.72 52.59 53.11 52.59 52.53
Star angle, ° 19.98 20.31 20.35 20.31 20.29 20.06 19.97 20.86
Upper girdle 40.61 40.25 40.52 40.37 40.32 40.41 40.59 40.42
angle, ° 40.58 40.42 40.29 40.24 40.18 39.95 40.74 40.65
Length girdle 77.28 77.80 76.48 77.50 76.49 76.66 75.61 76.06
facet, % 75.91 76.50 74.78 74.56 76.00 76.35 76.74 76.76
Lower girdle angle / 41.97 41.84 41.88 41.82 41.97 42.03 42.10 42.06
Halves angle, ° 42.02 42.02 42.04 42.04 41.94 41.83 41.96 42.05
Facet Twist, ° 0.38 0.30 0.17 0.43 0.05 0.06 0.14 0.22
Crown height, mm 1.092 1.079 1.077 1.067 1.067 1.076 1.075 1.081
Pavilion height, mm 3.215 3.216 3.219 3.236 3.225 3.221 3.212 3.205
Table, mm 4.294 4.311 4.303 4.316 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.268 0.280 0.279 0.271 0.282 0.278 0.287 0.289
 
Measurement as per OctoNus theory:
Crown angle, ° 34.12 34.05 33.99 34.09 – – – –
Pavilion angle, ° 40.80 40.74 40.75 40.76 – – – –
MIC, mm 7.473 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, ° 0.12 N/A 0.68 EX
Crown,notch. 0.0, Negligible 0.2
Pavilion, ° -0.04 N/A -0.69 EX
Pavilion,notch. 0.0, Negligible 0.2