Illustrated report for brilliant

Polished Brilliant
Brilliant
01.03.2026
Model Shadow scan
Expert name N/A
Scale weight, ct 3.99
Corrected mass, ct 3.98, 3.9853
Measurements 10.183 (10.164-10.204) x 6.241 / 0.002 (mm)
Spread -0.08ct, -2.17 %
AGS Spread -0.09 ct, -2.33%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
10.164 mm 10.204 mm 1.004 10.164 mm 10.204 mm 10.183 mm 6.241 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.483 mm 4.372 mm 5.792 mm 0.036 mm 0.386 mm 0.413 mm 0.235 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 medium errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 10.183 10.164 10.204 0.40% - EX
Radius, mm 5.090 5.076 5.103 0.027% – –
Crown angle, ° 34.04 33.75 34.19 0.44 EX EX
Pavilion angle, ° 40.77 40.61 40.99 0.38 EX EX
Total height, % 61.28 – – – - –
Crown height, % 14.56 14.45 14.78 0.32 - EX
Crown height bone, % 14.24 14.11 14.39 0.27 – –
Pavilion height, % 42.94 42.83 43.08 0.24 – –
Pavilion upperbone, % 42.98 42.84 43.33 0.50 – –
Table, % 56.87 56.42 57.15 0.72 EX EX
Culet, % 0.35 0.28 0.39 0.12 EX -
Girdle height bezel, % 3.79 3.43 3.91 0.48 EX EX
Girdle height bone, % 4.06 3.60 4.25 0.65 – -
Girdle height 2.31 1.88 2.54 0.66 - -
valley, %
Star: 47.89: 47.32: 48.24: 0.92 EX EX
Upper ratio, % 52.11 52.68 51.76
Star angle, ° 20.59 20.37 20.91 0.54 – EX
Upper girdle 39.59 39.04 40.38 1.35 – EX
angle, °
Length girdle 76.43 74.43 78.01 3.57 EX EX
facet, %
Lower girdle angle / 41.99 41.72 42.28 0.56 – EX
Halves angle, °
Facet Twist, ° 0.19 0.01 0.49 0.48 – -
Crown height, mm 1.483 1.472 1.505 0.033 - EX
Pavilion height, mm 4.372 4.362 4.387 0.025 – –
Table, mm 5.792 5.746 5.819 0.074 EX EX
Culet, mm 0.036 0.028 0.040 0.012 EX -
Girdle height bezel, mm 0.386 0.349 0.398 0.049 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.04 33.89 34.17 0.28 – –
Pavilion angle, ° 40.77 40.72 40.84 0.12 – –
Fish eye effect, ° 8.10 – – – - –
Culet through Crown Bezel, ° 11.37 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.16 -0.10 0.00 -0.11 0.18 0.00 0.31 0.28
Crown azimuths dev. from ideal 0.05 -0.29 0.48 -0.14 0.26 0.11 0.44 0.52
Crown painting 1.58 0.96 0.86 -0.64 2.54 1.59 1.03 1.79
1.51 1.61 0.42 -0.07 1.90 0.98 1.12 1.70
Pavilion painting -0.17 0.26 -0.15 -0.34 0.30 0.13 -0.46 0.04
-0.49 0.52 -1.68 -1.33 -0.09 -0.07 -0.21 0.72
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.20 ± 0.15 % 0.020 ± 0.015 mm EX
Girdle-Table offset by table axis 0.15 ± 0.13 % 0.015 ± 0.013 mm EX
Table-Culet offset by table axis 0.34 ± 0.17 % 0.034 ± 0.017 mm EX
Girdle to table-culet line offset 0.34 % 0.034 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 10.169 10.179 10.184 10.204 – – – –
Radius, mm 5.082 5.087 5.093 5.101 5.087 5.091 5.090 5.102
Crown angle, ° 34.16 34.15 33.93 34.03 34.05 34.19 34.09 33.75
Pavilion angle, ° 40.99 40.79 40.64 40.61 40.68 40.73 40.85 40.82
Total height, % – – – – – – – –
Crown height, % 14.78 14.53 14.49 14.55 14.60 14.53 14.45 14.54
Crown height bone, % 14.39 14.31 14.11 14.11 14.20 14.35 14.13 14.34
Pavilion height, % 43.08 42.91 42.88 42.98 42.83 42.91 42.94 42.96
Pavilion upperbone, % 43.02 42.84 42.96 42.92 42.86 43.33 42.97 42.98
Table, % 56.42 57.15 57.09 56.84 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.43 3.84 3.91 3.76 3.85 3.84 3.89 3.78
Girdle height bone, % 3.87 4.14 4.21 4.25 4.23 3.60 4.18 3.96
Girdle height 1.88 2.22 2.37 2.54 2.35 2.31 2.31 2.41
valley, % 2.39 2.54 2.34 2.07 2.38 2.33 2.27 2.20
Star: 47.83: 47.64: 47.89: 47.32: 48.09: 48.24: 48.15: 48.00:
Upper ratio, % 52.17 52.36 52.11 52.68 51.91 51.76 51.85 52.00
Star angle, ° 20.58 20.37 20.91 20.64 20.47 20.53 20.61 20.63
Upper girdle 39.69 39.72 39.86 40.08 39.04 39.25 39.52 39.20
angle, ° 39.56 39.51 39.97 40.38 39.38 39.48 39.43 39.40
Length girdle 76.23 76.19 77.79 78.01 76.93 76.48 76.16 75.48
facet, % 75.62 74.43 76.94 76.79 76.80 76.85 76.07 76.12
Lower girdle angle / 42.22 42.05 41.87 41.72 41.87 41.84 41.87 41.88
Halves angle, ° 41.95 41.90 42.19 42.28 42.03 41.98 42.03 42.10
Facet Twist, ° 0.23 0.18 0.49 0.01 0.10 0.13 0.15 0.26
Crown height, mm 1.505 1.480 1.476 1.482 1.487 1.480 1.472 1.481
Pavilion height, mm 4.387 4.370 4.366 4.376 4.362 4.370 4.372 4.375
Table, mm 5.746 5.819 5.814 5.788 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.349 0.391 0.398 0.382 0.392 0.391 0.397 0.385
 
Measurement as per OctoNus theory:
Crown angle, ° 34.11 34.17 34.01 33.89 – – – –
Pavilion angle, ° 40.84 40.76 40.75 40.72 – – – –
MIC, mm 10.162 Extra Facet Crown No –
Girdle to MIC, mm 0.002 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 1.18 Painting EX 2.54 -
Crown,notch. 0.3, Small 0.7
Pavilion, ° -0.19 EX -1.68 -
Pavilion,notch. 0.1, Negligible 0.4