Illustrated report for brilliant

Polished Brilliant
Brilliant
01.04.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 2.43, 2.4378
Measurements 8.634 (8.617-8.649) x 5.322 / 0.020 (mm)
Spread -0.06ct, -2.56 %
AGS Spread -0.06 ct, -2.70%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.617 mm 8.649 mm 1.004 8.617 mm 8.649 mm 8.634 mm 5.322 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.297 mm 3.713 mm 4.856 mm 0.030 mm 0.312 mm 0.359 mm 0.197 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 medium errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 8.634 8.617 8.649 0.37% GD EX
Radius, mm 4.315 4.292 4.333 0.041% – –
Crown angle, ° 34.43 34.27 34.55 0.28 EX EX
Pavilion angle, ° 40.79 40.69 40.88 0.19 EX EX
Total height, % 61.64 – – – VG –
Crown height, % 15.02 14.86 15.25 0.39 EX EX
Crown height bone, % 14.44 14.03 14.80 0.77 – –
Pavilion height, % 43.00 42.66 43.38 0.72 – –
Pavilion upperbone, % 43.04 42.63 43.50 0.86 – –
Table, % 56.24 56.04 56.39 0.35 EX EX
Culet, % 0.34 0.28 0.39 0.11 GD EX
Girdle height bezel, % 3.61 3.27 3.98 0.71 EX VG
Girdle height bone, % 4.16 3.94 4.36 0.41 – EX
Girdle height 2.28 1.99 2.74 0.75 N/A EX
valley, %
Star: 48.75: 48.00: 49.63: 1.63 EX EX
Upper ratio, % 51.25 52.00 50.37
Star angle, ° 21.43 21.12 21.87 0.75 – EX
Upper girdle 39.44 38.63 40.12 1.48 – VG
angle, °
Length girdle 78.23 77.13 80.35 3.22 EX VG
facet, %
Lower girdle angle / 41.94 41.82 42.08 0.27 – EX
Halves angle, °
Facet Twist, ° 0.35 0.11 0.51 0.40 – EX
Crown height, mm 1.297 1.283 1.316 0.034 EX EX
Pavilion height, mm 3.713 3.683 3.746 0.062 – –
Table, mm 4.856 4.838 4.869 0.030 EX EX
Culet, mm 0.030 0.025 0.034 0.009 GD EX
Girdle height bezel, mm 0.312 0.282 0.343 0.061 EX VG
Measurement as per OctoNus theory:
Crown angle, ° 34.43 34.28 34.53 0.25 – –
Pavilion angle, ° 40.79 40.74 40.82 0.08 – –
Fish eye effect, ° 8.53 – – – N/A –
Culet through Crown Bezel, ° 9.79 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.43 0.04 -0.16 0.01 -0.04 0.03 -0.02 0.10
Crown azimuths dev. from ideal 0.05 0.39 0.23 0.40 0.44 -0.33 0.19 -0.05
Crown painting 3.02 2.68 3.58 3.18 1.06 1.00 2.13 0.28
1.29 2.25 3.05 2.30 2.47 1.74 2.02 0.97
Pavilion painting 0.08 -0.33 -0.11 -0.78 -0.32 -0.50 -0.21 0.06
-0.31 0.31 -0.27 -0.01 -0.32 0.12 -0.22 -0.38
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.24 ± 0.17 % 0.021 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.24 ± 0.15 % 0.021 ± 0.013 mm N/A
Table-Culet offset by table axis 0.48 ± 0.19 % 0.041 ± 0.016 mm N/A
Girdle to table-culet line offset 0.48 % 0.041 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.641 8.643 8.629 8.640 – – – –
Radius, mm 4.324 4.326 4.310 4.329 4.314 4.317 4.318 4.309
Crown angle, ° 34.43 34.49 34.27 34.52 34.35 34.51 34.30 34.55
Pavilion angle, ° 40.85 40.88 40.78 40.69 40.71 40.76 40.84 40.79
Total height, % – – – – – – – –
Crown height, % 14.86 14.99 14.96 15.24 15.00 15.25 15.00 14.86
Crown height bone, % 14.10 14.03 14.68 14.80 14.71 14.38 14.47 14.35
Pavilion height, % 43.36 43.38 42.89 42.80 42.66 42.79 43.05 43.07
Pavilion upperbone, % 43.50 43.25 42.81 42.75 42.63 43.02 43.22 43.13
Table, % 56.39 56.19 56.04 56.34 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.41 3.27 3.79 3.59 3.98 3.60 3.58 3.70
Girdle height bone, % 4.04 4.36 4.14 4.08 4.29 4.24 3.94 4.16
Girdle height 1.99 2.09 2.26 2.46 2.26 2.37 2.10 2.32
valley, % 2.74 2.41 2.18 2.35 2.11 2.31 2.39 2.15
Star: 48.68: 49.35: 48.23: 48.00: 48.31: 48.77: 48.99: 49.63:
Upper ratio, % 51.32 50.65 51.77 52.00 51.69 51.23 51.01 50.37
Star angle, ° 21.18 21.33 21.12 21.51 21.74 21.14 21.87 21.52
Upper girdle 38.99 39.03 38.63 38.73 39.82 39.91 39.67 40.00
angle, ° 40.12 39.54 38.88 38.86 39.26 39.71 39.81 40.05
Length girdle 80.35 79.05 79.82 79.71 77.28 77.20 77.73 77.68
facet, % 77.13 77.78 77.39 77.50 77.85 77.53 78.99 78.63
Lower girdle angle / 42.01 42.00 41.97 42.05 41.92 41.90 41.89 41.82
Halves angle, ° 41.94 41.86 41.95 41.93 42.08 41.97 41.91 41.87
Facet Twist, ° 0.35 0.39 0.42 0.43 0.51 0.33 0.25 0.11
Crown height, mm 1.283 1.294 1.291 1.316 1.296 1.316 1.295 1.283
Pavilion height, mm 3.744 3.746 3.703 3.696 3.683 3.695 3.717 3.719
Table, mm 4.869 4.852 4.838 4.864 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.295 0.282 0.327 0.310 0.343 0.311 0.309 0.320
 
Measurement as per OctoNus theory:
Crown angle, ° 34.39 34.50 34.28 34.53 – – – –
Pavilion angle, ° 40.78 40.82 40.81 40.74 – – – –
MIC, mm 8.597 Extra Facet Crown No –
Girdle to MIC, mm 0.020 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 2.06 Painting N/A 3.58 EX
Crown,notch. 0.6, Small 1.0
Pavilion, ° -0.20 N/A -0.78 EX
Pavilion,notch. 0.1, Negligible 0.2