Illustrated report for brilliant

Polished Brilliant
Brilliant
21.01.2026
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 1.58, 1.5796
Measurements 7.490 (7.470-7.506) x 4.596 / 0.004 (mm)
Spread -0.03ct, -1.82 %
AGS Spread -0.03 ct, -1.97%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
7.470 mm 7.506 mm 1.005 7.470 mm 7.506 mm 7.490 mm 4.596 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.122 mm 3.216 mm 4.228 mm 0.032 mm 0.258 mm 0.282 mm 0.146 mm
Appraiser title Lexus_Opt_12FEB2011
Overall cut quality N/A
Symmetry appraiser title Symmetry
Overall symmetry quality VG
Final grade N/A
Model building info The model has small errors
   
Color
Clarity
Polish
Fluorescence
Parameter Avg Min Max Dev Cut Grade Sym Grade
Diameter, mm 7.490 7.470 7.506 0.48% GD EX
Radius, mm 3.744 3.729 3.756 0.028% – –
Crown angle, ° 34.55 34.25 34.93 0.68 EX VG
Pavilion angle, ° 40.79 40.56 41.03 0.47 EX EX
Total height, % 61.36 – – – EX –
Crown height, % 14.98 14.85 15.13 0.28 EX EX
Crown height bone, % 14.63 14.34 14.94 0.60 – –
Pavilion height, % 42.93 42.77 43.19 0.42 – –
Pavilion upperbone, % 42.96 42.79 43.20 0.41 – –
Table, % 56.45 56.25 56.61 0.36 EX EX
Culet, % 0.42 0.35 0.46 0.11 GD EX
Girdle height bezel, % 3.44 3.21 3.62 0.41 EX EX
Girdle height bone, % 3.76 3.58 3.94 0.36 – EX
Girdle height 1.94 1.74 2.14 0.40 N/A EX
valley, %
Star: 46.04: 45.38: 46.71: 1.33 EX EX
Upper ratio, % 53.96 54.62 53.29
Star angle, ° 20.75 20.42 21.08 0.67 – EX
Upper girdle 39.79 39.00 40.36 1.37 – VG
angle, °
Length girdle 75.39 74.45 76.64 2.20 -- EX
facet, %
Lower girdle angle / 42.03 41.73 42.25 0.52 – EX
Halves angle, °
Facet Twist, ° 0.33 0.12 0.51 0.39 – EX
Crown height, mm 1.122 1.113 1.133 0.021 EX EX
Pavilion height, mm 3.216 3.203 3.235 0.031 – –
Table, mm 4.228 4.213 4.240 0.027 EX EX
Culet, mm 0.032 0.026 0.034 0.008 GD EX
Girdle height bezel, mm 0.258 0.240 0.271 0.031 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 34.55 34.51 34.59 0.08 – –
Pavilion angle, ° 40.79 40.73 40.85 0.12 – –
Fish eye effect, ° 8.44 – – – N/A –
Culet through Crown Bezel, ° 10.06 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.09 0.01 -0.09 -0.12 -0.05 0.05 0.39 0.18
Crown azimuths dev. from ideal -0.27 -0.49 0.12 0.02 0.36 0.49 -0.05 -0.11
Crown painting 1.66 0.27 0.44 -0.44 2.76 1.62 2.17 1.06
2.16 1.89 1.79 1.65 1.71 1.14 0.30 0.85
Pavilion painting 0.21 -0.06 0.38 -0.17 0.32 -0.33 0.10 -0.27
-0.28 -0.59 0.40 -0.89 0.33 -0.35 0.55 -0.33
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.48 ± 0.19 % 0.036 ± 0.014 mm N/A
Girdle-Table offset by table axis 0.14 ± 0.17 % 0.011 ± 0.013 mm N/A
Table-Culet offset by table axis 0.63 ± 0.21 % 0.047 ± 0.015 mm N/A
Girdle to table-culet line offset 0.63 % 0.047 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 7.476 7.472 7.501 7.497 – – – –
Radius, mm 3.740 3.733 3.753 3.750 3.736 3.737 3.749 3.746
Crown angle, ° 34.42 34.25 34.33 34.56 34.67 34.93 34.81 34.47
Pavilion angle, ° 41.03 41.03 40.87 40.75 40.56 40.67 40.59 40.82
Total height, % – – – – – – – –
Crown height, % 15.13 14.85 14.86 14.96 14.92 14.99 15.12 14.97
Crown height bone, % 14.77 14.77 14.34 14.46 14.49 14.59 14.69 14.94
Pavilion height, % 42.83 42.88 43.11 43.19 42.95 42.97 42.77 42.77
Pavilion upperbone, % 42.79 42.94 43.16 43.10 43.20 42.83 42.84 42.83
Table, % 56.25 56.46 56.61 56.48 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 3.39 3.62 3.38 3.21 3.48 3.39 3.47 3.61
Girdle height bone, % 3.80 3.64 3.85 3.79 3.67 3.94 3.83 3.58
Girdle height 2.05 1.99 2.01 1.94 2.02 1.81 1.78 2.05
valley, % 1.84 1.74 2.08 2.14 1.89 2.01 2.00 1.75
Star: 46.27: 45.90: 46.68: 45.38: 46.71: 45.96: 45.63: 45.81:
Upper ratio, % 53.73 54.10 53.32 54.62 53.29 54.04 54.37 54.19
Star angle, ° 21.08 20.75 20.45 20.42 20.99 20.63 20.88 20.78
Upper girdle 39.72 39.87 40.36 40.33 39.00 39.48 39.20 39.73
angle, ° 40.00 40.03 39.84 39.62 39.82 39.63 40.20 39.79
Length girdle 75.04 74.80 75.35 75.39 74.45 75.18 75.63 75.53
facet, % 75.84 75.84 74.63 74.51 75.86 76.64 75.55 76.04
Lower girdle angle / 42.23 42.25 42.25 42.09 42.08 42.07 41.94 41.73
Halves angle, ° 41.90 42.04 41.84 41.87 41.92 41.97 42.03 42.25
Facet Twist, ° 0.20 0.51 0.20 0.12 0.40 0.43 0.46 0.30
Crown height, mm 1.133 1.113 1.113 1.121 1.118 1.123 1.132 1.122
Pavilion height, mm 3.208 3.212 3.229 3.235 3.217 3.218 3.204 3.203
Table, mm 4.213 4.229 4.240 4.231 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.254 0.271 0.253 0.240 0.261 0.254 0.260 0.271
 
Measurement as per OctoNus theory:
Crown angle, ° 34.55 34.59 34.57 34.51 – – – –
Pavilion angle, ° 40.79 40.85 40.73 40.79 – – – –
MIC, mm 7.466 Extra Facet Crown No –
Girdle to MIC, mm 0.004 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° 1.31 Painting N/A 2.76 EX
Crown,notch. 0.4, Small 0.7
Pavilion, ° -0.06 N/A -0.89 EX
Pavilion,notch. 0.0, Negligible 0.2