Illustrated report for brilliant

Polished Brilliant
Brilliant
20.11.2025
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.83, 1.8350
Measurements 7.883 (7.866-7.892) x 4.810 / 0.003 (mm)
Spread -0.03ct, -1.47 %
AGS Spread -0.03 ct, -1.62%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.866 mm 7.892 mm 1.003 7.866 mm 7.892 mm 7.883 mm 4.810 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.134 mm 3.386 mm 4.521 mm 0.028 mm 0.289 mm 0.296 mm 0.160 mm
Appraiser title GIA Facetware.Mfg
Overall cut quality EX
Symmetry appraiser title GIA Facetware.Mfg
Overall symmetry quality EX
Final grade EX
Model building info The model has small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 7.883 7.866 7.892 0.33% - EX
Radius, mm 3.940 3.930 3.948 0.018% – –
Crown angle, ° 34.09 33.96 34.26 0.30 EX EX
Pavilion angle, ° 40.79 40.69 40.99 0.29 EX EX
Total height, % 61.02 – – – - –
Crown height, % 14.39 14.28 14.49 0.21 - EX
Crown height bone, % 14.32 13.93 14.50 0.57 – –
Pavilion height, % 42.96 42.75 43.18 0.43 – –
Pavilion upperbone, % 42.95 42.72 43.15 0.44 – –
Table, % 57.35 57.22 57.54 0.32 EX EX
Culet, % 0.35 0.22 0.45 0.22 EX -
Girdle height bezel, % 3.67 3.50 3.96 0.45 EX EX
Girdle height bone, % 3.76 3.50 4.17 0.67 – -
Girdle height 2.03 1.63 2.39 0.76 - -
valley, %
Star: 47.75: 46.55: 49.01: 2.46 EX EX
Upper ratio, % 52.25 53.45 50.99
Star angle, ° 20.17 19.95 20.44 0.49 – EX
Upper girdle 40.29 39.36 40.98 1.62 – EX
angle, °
Length girdle 77.58 76.41 79.27 2.87 EX EX
facet, %
Lower girdle angle / 41.95 41.79 42.16 0.37 – EX
Halves angle, °
Facet Twist, ° 0.37 0.02 0.96 0.94 – -
Crown height, mm 1.134 1.126 1.142 0.016 - EX
Pavilion height, mm 3.386 3.370 3.403 0.034 – –
Table, mm 4.521 4.510 4.535 0.025 EX EX
Culet, mm 0.028 0.018 0.035 0.017 EX -
Girdle height bezel, mm 0.289 0.276 0.312 0.036 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.09 34.01 34.17 0.16 – –
Pavilion angle, ° 40.79 40.73 40.88 0.15 – –
Fish eye effect, ° 7.95 – – – - –
Culet through Crown Bezel, ° 12.01 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.57 0.65 0.68 0.43 -0.29 -0.25 -0.19 0.00
Crown azimuths dev. from ideal 0.15 0.33 -0.39 -0.04 -0.48 0.51 -0.20 0.15
Crown painting -0.87 0.39 0.29 1.29 -0.50 1.11 -0.22 -0.02
0.31 -0.51 0.63 0.03 0.94 1.94 -0.81 -0.07
Pavilion painting -0.02 -0.20 0.35 -0.33 0.17 -0.25 0.16 -0.08
-0.31 0.10 -0.01 0.36 0.20 0.13 -0.27 -0.37
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.32 ± 0.18 % 0.025 ± 0.015 mm EX
Girdle-Table offset by table axis 0.23 ± 0.16 % 0.018 ± 0.013 mm EX
Table-Culet offset by table axis 0.39 ± 0.20 % 0.030 ± 0.016 mm EX
Girdle to table-culet line offset 0.39 % 0.030 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.890 7.891 7.873 7.881 – – – –
Radius, mm 3.944 3.943 3.935 3.941 3.945 3.947 3.937 3.940
Crown angle, ° 34.03 34.17 33.96 34.08 33.98 34.12 34.14 34.26
Pavilion angle, ° 40.87 40.74 40.78 40.70 40.69 40.72 40.99 40.85
Total height, % – – – – – – – –
Crown height, % 14.43 14.49 14.42 14.44 14.40 14.34 14.34 14.28
Crown height bone, % 14.46 14.38 14.37 14.38 14.20 14.34 13.93 14.50
Pavilion height, % 42.79 42.75 43.00 43.04 43.08 43.07 43.18 42.78
Pavilion upperbone, % 42.72 42.93 43.15 43.04 43.03 43.00 42.92 42.77
Table, % 57.27 57.39 57.22 57.54 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.80 3.79 3.61 3.54 3.55 3.61 3.50 3.96
Girdle height bone, % 3.85 3.71 3.50 3.60 3.79 3.69 4.17 3.75
Girdle height 2.03 2.29 2.07 1.94 1.63 2.03 2.05 1.92
valley, % 1.94 2.03 2.10 1.71 1.91 2.39 2.36 2.05
Star: 49.01: 48.30: 46.85: 46.91: 48.67: 46.55: 47.44: 48.29:
Upper ratio, % 50.99 51.70 53.15 53.09 51.33 53.45 52.56 51.71
Star angle, ° 20.29 20.44 19.99 20.04 19.95 20.20 20.25 20.22
Upper girdle 40.98 40.38 40.16 39.78 40.41 39.85 40.30 40.29
angle, ° 40.36 40.65 40.16 40.35 40.10 39.36 40.92 40.66
Length girdle 77.77 77.80 76.98 77.93 78.99 79.27 76.92 76.57
facet, % 78.42 78.76 76.74 76.58 77.49 76.41 77.39 77.34
Lower girdle angle / 42.07 41.87 41.89 41.92 41.95 41.79 41.85 41.90
Halves angle, ° 41.84 41.80 41.90 42.08 42.16 42.03 42.04 42.07
Facet Twist, ° 0.22 0.12 0.87 0.27 0.02 0.96 0.19 0.35
Crown height, mm 1.138 1.142 1.137 1.138 1.135 1.130 1.130 1.126
Pavilion height, mm 3.373 3.370 3.389 3.393 3.396 3.395 3.403 3.372
Table, mm 4.514 4.524 4.510 4.535 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.300 0.299 0.284 0.279 0.279 0.285 0.276 0.312
 
Measurement as per OctoNus theory:
Crown angle, ° 34.01 34.15 34.05 34.17 – – – –
Pavilion angle, ° 40.78 40.73 40.88 40.78 – – – –
MIC, mm 7.862 Extra Facet Crown No –
Girdle to MIC, mm 0.003 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.25 EX 1.94 -
Crown,notch. 0.1, Negligible 0.5
Pavilion, ° -0.02 EX -0.37 -
Pavilion,notch. 0.0, Negligible 0.1