Illustrated report for brilliant

Polished Brilliant
Brilliant
07.02.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.81, 1.8103
Measurements 7.875 (7.858-7.890) x 4.778 / 0.003 (mm)
Spread -0.01ct, -0.38 %
AGS Spread -0.01 ct, -0.53%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.858 mm 7.890 mm 1.004 7.858 mm 7.890 mm 7.875 mm 4.778 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.139 mm 3.376 mm 4.514 mm 0.027 mm 0.263 mm 0.270 mm 0.138 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 7.875 7.858 7.890 0.40% - EX
Radius, mm 3.936 3.927 3.946 0.019% – –
Crown angle, ° 34.11 33.90 34.28 0.37 EX EX
Pavilion angle, ° 40.71 40.49 40.92 0.43 EX EX
Total height, % 60.67 – – – - –
Crown height, % 14.46 14.24 14.73 0.49 - EX
Crown height bone, % 14.38 14.14 14.72 0.58 – –
Pavilion height, % 42.87 42.47 43.38 0.91 – –
Pavilion upperbone, % 42.86 42.58 43.13 0.55 – –
Table, % 57.32 57.14 57.50 0.36 EX EX
Culet, % 0.34 0.24 0.44 0.20 EX -
Girdle height bezel, % 3.34 3.05 3.72 0.67 EX EX
Girdle height bone, % 3.43 2.90 3.72 0.81 – -
Girdle height 1.76 1.33 2.23 0.90 - -
valley, %
Star: 47.00: 46.00: 48.02: 2.02 EX EX
Upper ratio, % 53.00 54.00 51.98
Star angle, ° 20.26 19.72 20.49 0.78 – EX
Upper girdle 40.26 39.89 40.54 0.66 – EX
angle, °
Length girdle 75.94 75.30 76.78 1.48 EX EX
facet, %
Lower girdle angle / 41.93 41.64 42.07 0.42 – EX
Halves angle, °
Facet Twist, ° 0.27 0.03 0.55 0.52 – -
Crown height, mm 1.139 1.121 1.160 0.039 - EX
Pavilion height, mm 3.376 3.344 3.416 0.072 – –
Table, mm 4.514 4.500 4.528 0.028 EX EX
Culet, mm 0.027 0.019 0.034 0.016 EX -
Girdle height bezel, mm 0.263 0.240 0.293 0.053 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.11 34.00 34.20 0.21 – –
Pavilion angle, ° 40.71 40.70 40.73 0.03 – –
Fish eye effect, ° 7.66 – – – - –
Culet through Crown Bezel, ° 12.28 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.22 -0.12 -0.14 0.00 0.15 0.31 0.18 0.21
Crown azimuths dev. from ideal -0.04 -0.15 0.06 0.46 0.14 -0.17 0.02 -0.41
Crown painting 0.74 0.64 0.02 0.99 -0.38 -0.03 0.56 0.15
0.54 -0.17 0.63 -0.04 0.66 -0.28 0.25 -0.39
Pavilion painting 0.31 -0.22 0.24 -0.25 -0.65 -0.34 0.50 -0.76
0.38 -0.49 0.44 -0.02 0.00 0.09 0.11 0.83
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.16 ± 0.18 % 0.012 ± 0.014 mm EX
Girdle-Table offset by table axis 0.27 ± 0.16 % 0.021 ± 0.013 mm EX
Table-Culet offset by table axis 0.35 ± 0.20 % 0.027 ± 0.016 mm EX
Girdle to table-culet line offset 0.35 % 0.027 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.886 7.875 7.871 7.881 – – – –
Radius, mm 3.944 3.937 3.935 3.942 3.941 3.936 3.935 3.939
Crown angle, ° 33.95 34.15 34.13 34.23 34.04 34.22 34.28 33.90
Pavilion angle, ° 40.92 40.78 40.74 40.68 40.49 40.69 40.66 40.74
Total height, % – – – – – – – –
Crown height, % 14.24 14.36 14.66 14.73 14.51 14.55 14.28 14.33
Crown height bone, % 14.14 14.31 14.72 14.50 14.53 14.33 14.35 14.19
Pavilion height, % 43.38 43.03 42.96 42.88 42.47 42.63 42.67 42.99
Pavilion upperbone, % 43.13 42.98 43.06 42.58 42.61 42.62 42.88 43.07
Table, % 57.50 57.39 57.25 57.14 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.06 3.29 3.05 3.07 3.70 3.49 3.72 3.35
Girdle height bone, % 3.40 3.39 2.90 3.59 3.54 3.72 3.45 3.41
Girdle height 1.59 1.76 1.67 1.52 1.35 1.33 1.73 2.15
valley, % 1.89 1.97 1.92 2.23 2.05 1.78 1.65 1.50
Star: 47.37: 46.48: 46.58: 46.00: 47.35: 46.84: 48.02: 47.39:
Upper ratio, % 52.63 53.52 53.42 54.00 52.65 53.16 51.98 52.61
Star angle, ° 20.05 20.41 19.72 20.43 20.49 20.35 20.41 20.25
Upper girdle 39.89 40.13 40.40 39.89 40.50 40.46 40.21 39.90
angle, ° 40.28 40.30 40.34 40.23 40.49 40.54 40.38 40.30
Length girdle 75.62 76.54 75.93 75.97 75.33 76.27 76.01 75.99
facet, % 76.78 76.53 75.70 75.84 75.30 75.78 75.67 75.83
Lower girdle angle / 42.04 41.91 42.00 42.02 42.07 42.00 41.81 41.64
Halves angle, ° 41.80 41.84 41.94 41.80 41.96 41.97 41.98 42.07
Facet Twist, ° 0.25 0.03 0.27 0.53 0.05 0.41 0.09 0.55
Crown height, mm 1.121 1.131 1.155 1.160 1.143 1.146 1.125 1.129
Pavilion height, mm 3.416 3.388 3.383 3.377 3.344 3.357 3.360 3.385
Table, mm 4.528 4.520 4.509 4.500 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.241 0.259 0.240 0.242 0.291 0.275 0.293 0.264
 
Measurement as per OctoNus theory:
Crown angle, ° 34.00 34.18 34.20 34.06 – – – –
Pavilion angle, ° 40.70 40.73 40.70 40.71 – – – –
MIC, mm 7.855 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, ° 0.24 EX 0.99 -
Crown,notch. 0.1, Negligible 0.3
Pavilion, ° 0.01 EX 0.83 -
Pavilion,notch. 0.0, Negligible 0.2