Illustrated report for brilliant

Polished Brilliant
Brilliant
26.12.2024
Model Shadow scan
Expert name N/A
Scale weight, ct 0.91
Corrected mass, ct 0.91, 0.9112
Measurements 6.259 (6.250-6.270) x 3.789 / 0.006 (mm)
Spread -0.01ct, -0.70 %
AGS Spread -0.01 ct, -0.82%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
6.250 mm 6.270 mm 1.003 6.250 mm 6.270 mm 6.259 mm 3.789 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
0.885 mm 2.689 mm 3.697 mm 0.028 mm 0.215 mm 0.222 mm 0.116 mm
Appraiser title GIA Facetware.Mfg
Overall cut quality EX
Symmetry appraiser title GIA Facetware.Mfg
Overall symmetry quality VG
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 6.259 6.250 6.270 0.32% - EX
Radius, mm 3.128 3.121 3.138 0.017% – –
Crown angle, ° 34.64 34.26 34.85 0.60 EX EX
Pavilion angle, ° 40.80 40.52 41.06 0.53 EX EX
Total height, % 60.53 – – – - –
Crown height, % 14.13 13.88 14.45 0.57 - EX
Crown height bone, % 13.99 13.72 14.41 0.69 – –
Pavilion height, % 42.96 42.59 43.25 0.67 – –
Pavilion upperbone, % 43.00 42.69 43.32 0.63 – –
Table, % 59.06 58.93 59.18 0.25 EX EX
Culet, % 0.45 0.37 0.51 0.14 EX -
Girdle height bezel, % 3.44 3.15 3.65 0.50 EX EX
Girdle height bone, % 3.54 3.38 3.74 0.36 – -
Girdle height 1.85 1.55 2.22 0.67 - -
valley, %
Star: 47.95: 46.35: 49.10: 2.75 EX EX
Upper ratio, % 52.05 53.65 50.90
Star angle, ° 20.31 19.26 21.57 2.31 – EX
Upper girdle 40.88 40.03 41.78 1.74 – EX
angle, °
Length girdle 77.82 76.84 79.15 2.31 EX EX
facet, %
Lower girdle angle / 41.95 41.48 42.25 0.77 – EX
Halves angle, °
Facet Twist, ° 1.27 0.17 2.47 2.30 – -
Crown height, mm 0.885 0.869 0.905 0.036 - EX
Pavilion height, mm 2.689 2.666 2.707 0.042 – –
Table, mm 3.697 3.688 3.704 0.016 EX EX
Culet, mm 0.028 0.023 0.032 0.009 EX -
Girdle height bezel, mm 0.215 0.197 0.229 0.032 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.64 34.39 34.80 0.42 – –
Pavilion angle, ° 40.80 40.64 40.86 0.22 – –
Fish eye effect, ° 6.98 – – – - –
Culet through Crown Bezel, ° 13.30 – – – - –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal 0.49 -0.69 0.00 -0.85 -0.91 0.54 -0.46 0.62
Crown azimuths dev. from ideal -1.11 0.28 0.41 -0.50 -2.92 -0.63 -1.43 -1.67
Crown painting 0.65 -1.10 2.50 0.25 1.07 0.46 0.77 -0.34
1.44 0.87 1.05 -0.25 0.55 -0.82 1.36 0.17
Pavilion painting 1.94 -1.14 0.75 -1.34 1.45 -1.97 0.54 -1.38
2.02 -2.83 2.21 -0.75 2.34 -2.48 1.94 -2.67
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.48 ± 0.22 % 0.030 ± 0.014 mm EX
Girdle-Table offset by table axis 0.29 ± 0.20 % 0.018 ± 0.012 mm EX
Table-Culet offset by table axis 0.71 ± 0.24 % 0.045 ± 0.015 mm VG
Girdle to table-culet line offset 0.71 % 0.045 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 6.255 6.260 6.254 6.269 – – – –
Radius, mm 3.128 3.126 3.128 3.134 3.126 3.133 3.125 3.135
Crown angle, ° 34.52 34.85 34.71 34.76 34.26 34.76 34.63 34.67
Pavilion angle, ° 40.73 40.91 41.06 40.75 40.99 40.80 40.61 40.52
Total height, % – – – – – – – –
Crown height, % 13.88 14.01 14.06 14.37 14.18 14.45 14.06 14.06
Crown height bone, % 13.83 13.72 14.08 14.41 13.79 14.22 14.10 13.76
Pavilion height, % 43.25 43.19 43.10 42.59 42.82 42.93 42.82 42.94
Pavilion upperbone, % 43.32 43.22 42.97 42.69 43.00 42.80 42.73 43.29
Table, % 58.93 59.02 59.18 59.12 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.40 3.33 3.37 3.57 3.52 3.15 3.65 3.53
Girdle height bone, % 3.38 3.59 3.48 3.44 3.74 3.51 3.70 3.48
Girdle height 1.69 1.66 1.78 1.81 1.80 1.95 1.82 2.22
valley, % 1.78 1.55 1.83 2.01 2.17 1.94 1.99 1.65
Star: 47.81: 47.52: 47.73: 48.62: 46.35: 47.83: 48.66: 49.10:
Upper ratio, % 52.19 52.48 52.27 51.38 53.65 52.17 51.34 50.90
Star angle, ° 19.38 19.86 20.88 21.57 19.26 20.79 20.46 20.26
Upper girdle 41.02 41.78 40.15 40.79 40.83 40.96 40.93 40.76
angle, ° 40.03 40.43 40.68 41.14 40.79 41.64 40.86 41.28
Length girdle 77.47 76.87 78.06 78.35 76.84 77.40 77.48 78.26
facet, % 77.38 78.28 77.77 79.15 78.62 77.16 77.89 78.12
Lower girdle angle / 41.92 42.09 42.08 42.20 42.15 42.07 41.96 42.02
Halves angle, ° 42.16 42.25 41.76 41.77 41.48 41.73 41.64 41.94
Facet Twist, ° 1.78 0.79 0.23 0.17 2.19 1.36 1.15 2.47
Crown height, mm 0.869 0.877 0.880 0.900 0.888 0.905 0.880 0.880
Pavilion height, mm 2.707 2.703 2.698 2.666 2.680 2.687 2.680 2.688
Table, mm 3.688 3.694 3.704 3.700 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.213 0.209 0.211 0.223 0.221 0.197 0.229 0.221
 
Measurement as per OctoNus theory:
Crown angle, ° 34.39 34.80 34.67 34.71 – – – –
Pavilion angle, ° 40.86 40.86 40.83 40.64 – – – –
MIC, mm 6.244 Extra Facet Crown No –
Girdle to MIC, mm 0.006 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 0.54 Painting EX 2.50 -
Crown,notch. 0.1, Very small 0.7
Pavilion, ° -0.09 EX -2.83 -
Pavilion,notch. 0.0, Negligible 0.8