Illustrated report for brilliant

Polished Brilliant
Brilliant
27.04.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 2.28, 2.2877
Measurements 8.419 (8.401-8.438) x 5.213 / 0.010 (mm)
Spread -0.08ct, -3.83 %
AGS Spread -0.09 ct, -3.97%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
8.401 mm 8.438 mm 1.004 8.401 mm 8.438 mm 8.419 mm 5.213 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.260 mm 3.613 mm 4.767 mm 0.032 mm 0.340 mm 0.333 mm 0.196 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 8.419 8.401 8.438 0.44% - EX
Radius, mm 4.208 4.193 4.221 0.028% – –
Crown angle, ° 34.72 34.63 34.88 0.25 EX EX
Pavilion angle, ° 40.79 40.71 40.88 0.17 EX EX
Total height, % 61.92 – – – - –
Crown height, % 14.96 14.82 15.08 0.27 - EX
Crown height bone, % 14.97 14.80 15.20 0.40 – –
Pavilion height, % 42.92 42.60 43.27 0.67 – –
Pavilion upperbone, % 42.98 42.70 43.32 0.62 – –
Table, % 56.63 56.36 56.86 0.51 EX EX
Culet, % 0.38 0.27 0.47 0.20 EX -
Girdle height bezel, % 4.04 3.76 4.30 0.55 EX EX
Girdle height bone, % 3.96 3.69 4.23 0.54 – -
Girdle height 2.33 2.04 2.72 0.68 - -
valley, %
Star: 48.31: 47.65: 49.05: 1.41 EX EX
Upper ratio, % 51.69 52.35 50.95
Star angle, ° 21.25 20.99 21.70 0.71 – EX
Upper girdle 40.95 40.60 41.20 0.60 – EX
angle, °
Length girdle 76.73 75.12 78.39 3.27 EX EX
facet, %
Lower girdle angle / 41.96 41.76 42.08 0.32 – EX
Halves angle, °
Facet Twist, ° 0.25 0.01 0.70 0.69 – -
Crown height, mm 1.260 1.247 1.270 0.022 - EX
Pavilion height, mm 3.613 3.586 3.643 0.056 – –
Table, mm 4.767 4.745 4.787 0.043 EX EX
Culet, mm 0.032 0.022 0.039 0.017 EX -
Girdle height bezel, mm 0.340 0.316 0.362 0.046 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.72 34.69 34.76 0.07 – –
Pavilion angle, ° 40.79 40.76 40.80 0.04 – –
Fish eye effect, ° 8.30 – – – - –
Culet through Crown Bezel, ° 9.44 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.01 0.02 0.09 -0.02 0.24 0.36 0.08 -0.27
Crown azimuths dev. from ideal -0.47 -0.40 -0.20 -0.05 0.29 0.20 -0.65 -0.32
Crown painting 0.73 0.64 0.21 0.88 -0.06 0.81 0.39 0.58
0.35 -0.16 0.50 0.43 0.20 0.00 -0.14 -0.35
Pavilion painting 0.27 -0.60 0.36 0.00 0.01 -0.11 0.29 0.07
0.16 -0.39 0.64 -0.15 0.71 0.30 -0.13 -0.52
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.23 ± 0.17 % 0.019 ± 0.015 mm EX
Girdle-Table offset by table axis 0.13 ± 0.15 % 0.011 ± 0.013 mm EX
Table-Culet offset by table axis 0.34 ± 0.19 % 0.029 ± 0.016 mm EX
Girdle to table-culet line offset 0.34 % 0.029 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 8.406 8.410 8.416 8.409 – – – –
Radius, mm 4.209 4.200 4.207 4.200 4.196 4.209 4.208 4.209
Crown angle, ° 34.64 34.64 34.63 34.80 34.88 34.80 34.75 34.66
Pavilion angle, ° 40.85 40.71 40.72 40.71 40.76 40.82 40.88 40.87
Total height, % – – – – – – – –
Crown height, % 14.83 14.82 15.00 15.05 14.99 15.08 15.08 14.84
Crown height bone, % 14.80 14.83 15.02 14.99 15.09 15.20 14.96 14.88
Pavilion height, % 43.27 42.88 42.83 42.60 42.62 42.93 43.08 43.13
Pavilion upperbone, % 43.32 42.89 42.78 42.70 42.88 43.03 43.06 43.22
Table, % 56.86 56.66 56.36 56.62 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.82 4.22 4.09 4.28 4.30 3.91 3.76 3.95
Girdle height bone, % 3.80 4.20 4.12 4.23 3.94 3.69 3.90 3.82
Girdle height 2.07 2.16 2.61 2.36 2.39 2.72 2.26 2.52
valley, % 2.60 2.28 2.04 2.21 2.29 2.29 2.35 2.19
Star: 48.75: 47.97: 48.71: 47.90: 47.74: 47.65: 49.05: 48.69:
Upper ratio, % 51.25 52.03 51.29 52.10 52.26 52.35 50.95 51.31
Star angle, ° 21.02 20.99 21.17 21.07 21.70 21.28 21.51 21.24
Upper girdle 40.80 41.03 40.72 40.60 40.87 40.67 40.96 40.85
angle, ° 41.16 40.90 41.14 40.81 41.05 41.18 41.20 41.18
Length girdle 76.89 76.36 78.24 78.39 76.72 77.67 76.70 76.29
facet, % 76.98 77.26 76.38 75.90 75.12 76.25 75.86 76.61
Lower girdle angle / 42.08 41.97 41.80 41.80 41.89 41.76 41.96 41.90
Halves angle, ° 41.94 42.01 41.97 42.06 42.02 42.01 42.05 42.08
Facet Twist, ° 0.43 0.39 0.26 0.01 0.09 0.13 0.70 0.01
Crown height, mm 1.249 1.247 1.263 1.267 1.262 1.270 1.270 1.249
Pavilion height, mm 3.643 3.610 3.606 3.586 3.588 3.614 3.627 3.632
Table, mm 4.787 4.770 4.745 4.767 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.322 0.355 0.344 0.360 0.362 0.329 0.316 0.332
 
Measurement as per OctoNus theory:
Crown angle, ° 34.76 34.72 34.69 34.73 – – – –
Pavilion angle, ° 40.80 40.76 40.80 40.79 – – – –
MIC, mm 8.391 Extra Facet Crown No –
Girdle to MIC, mm 0.010 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.31 EX 0.88 -
Crown,notch. 0.1, Negligible 0.2
Pavilion, ° 0.06 EX 0.71 -
Pavilion,notch. 0.0, Negligible 0.2