Illustrated report for brilliant

Polished Brilliant
Brilliant
18.01.2022
Model Shadow scan
Expert name N/A
Scale weight, ct N/A
Corrected mass, ct 3.81, 3.8139
Measurements 9.969 (9.943-9.981) x 6.175 / 0.016 (mm)
Spread -0.16ct, -4.23 %
AGS Spread -0.16 ct, -4.38%
Extra Facet Girdle / Nat No
Width Length Ratio (L/W) Diameter Minimum Diameter Maximum Diameter Average Total height
9.943 mm 9.981 mm 1.004 9.943 mm 9.981 mm 9.969 mm 6.175 mm
 
Crown height Pavilion height Table Culet Girdle height
Bezel Bone Valley
1.508 mm 4.267 mm 5.675 mm 0.028 mm 0.401 mm 0.387 mm 0.226 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 9.969 9.943 9.981 0.39% GD EX
Radius, mm 4.982 4.958 4.992 0.034% – –
Crown angle, ° 35.12 34.96 35.24 0.28 EX EX
Pavilion angle, ° 40.64 40.53 40.71 0.18 EX EX
Total height, % 61.95 – – – VG –
Crown height, % 15.12 15.02 15.26 0.24 EX EX
Crown height bone, % 15.26 15.03 15.52 0.49 – –
Pavilion height, % 42.80 42.63 42.92 0.28 – –
Pavilion upperbone, % 42.80 42.71 42.91 0.20 – –
Table, % 56.93 56.59 57.16 0.57 EX EX
Culet, % 0.28 0.22 0.32 0.10 VG EX
Girdle height bezel, % 4.02 3.80 4.27 0.46 EX EX
Girdle height bone, % 3.88 3.58 4.13 0.56 – EX
Girdle height 2.26 1.99 2.49 0.49 N/A EX
valley, %
Star: 52.72: 51.72: 53.64: 1.92 EX EX
Upper ratio, % 47.28 48.28 46.36
Star angle, ° 22.45 22.30 22.77 0.46 – EX
Upper girdle 42.54 42.04 43.29 1.26 – VG
angle, °
Length girdle 76.03 74.74 77.14 2.39 -- EX
facet, %
Lower girdle angle / 41.86 41.70 41.96 0.26 – EX
Halves angle, °
Facet Twist, ° 0.28 0.08 0.53 0.44 – EX
Crown height, mm 1.508 1.497 1.521 0.024 EX EX
Pavilion height, mm 4.267 4.250 4.278 0.028 – –
Table, mm 5.675 5.641 5.698 0.056 EX EX
Culet, mm 0.028 0.022 0.032 0.010 VG EX
Girdle height bezel, mm 0.401 0.379 0.425 0.046 EX EX
Measurement as per OctoNus theory:
Crown angle, ° 35.12 35.05 35.23 0.18 – –
Pavilion angle, ° 40.64 40.54 40.68 0.14 – –
Fish eye effect, ° 7.51 – – – N/A –
Culet through Crown Bezel, ° 9.08 – – – N/A –
Parameter, ° 1 2 3 4 5 6 7 8
Pav. azimuths dev. from ideal -0.17 -0.27 0.13 -0.14 0.04 0.44 -0.04 0.03
Crown azimuths dev. from ideal 0.16 0.25 0.29 0.07 -0.04 0.05 -0.13 0.46
Crown painting -0.26 -0.54 -0.66 -1.58 0.27 0.11 -0.33 -0.25
-0.69 -0.83 -0.38 -0.25 -0.12 -0.94 0.18 -0.61
Pavilion painting -0.35 -0.13 -0.38 -0.07 0.23 0.14 -0.14 -0.02
-0.03 -0.17 0.37 0.17 -0.12 -0.14 0.06 0.15
Girdle center Culet center Table center Girdle center mass
Parameter     Sym Grade
Girdle-Culet offset by table axis 0.07 ± 0.15 % 0.007 ± 0.015 mm N/A
Girdle-Table offset by table axis 0.09 ± 0.12 % 0.009 ± 0.012 mm N/A
Table-Culet offset by table axis 0.07 ± 0.16 % 0.007 ± 0.016 mm N/A
Girdle to table-culet line offset 0.07 % 0.007 mm –
Parameter 1 2 3 4 5 6 7 8
Diameter, mm 9.973 9.974 9.961 9.977 – – – –
Radius, mm 4.987 4.985 4.983 4.987 4.986 4.987 4.977 4.990
Crown angle, ° 34.98 35.18 35.20 35.23 35.13 34.96 35.03 35.24
Pavilion angle, ° 40.53 40.65 40.71 40.68 40.55 40.68 40.65 40.66
Total height, % – – – – – – – –
Crown height, % 15.02 15.26 15.02 15.15 15.05 15.18 15.19 15.13
Crown height bone, % 15.25 15.52 15.03 15.22 15.35 15.28 15.26 15.18
Pavilion height, % 42.70 42.88 42.83 42.80 42.63 42.87 42.79 42.92
Pavilion upperbone, % 42.91 42.85 42.78 42.71 42.73 42.78 42.90 42.75
Table, % 57.15 56.59 56.81 57.16 – – – –
Culet, % – – – – – – – –
Girdle height bezel, % 4.23 3.80 4.09 4.00 4.27 3.90 3.97 3.90
Girdle height bone, % 3.79 3.58 4.13 4.02 3.87 3.89 3.79 4.02
Girdle height 2.34 1.99 2.36 2.12 2.38 2.42 2.19 2.49
valley, % 2.47 2.03 2.10 2.47 2.10 2.07 2.22 2.48
Star: 52.22: 53.16: 51.72: 53.33: 53.64: 52.12: 53.54: 52.04:
Upper ratio, % 47.78 46.84 48.28 46.67 46.36 47.88 46.46 47.96
Star angle, ° 22.30 22.37 22.42 22.52 22.77 22.39 22.44 22.41
Upper girdle 42.21 42.52 43.12 43.29 42.04 42.05 42.95 42.54
angle, ° 42.75 42.84 42.07 42.22 42.48 42.92 42.23 42.35
Length girdle 76.32 76.85 75.63 75.84 74.74 75.11 75.49 75.95
facet, % 76.86 77.14 76.59 76.59 76.06 76.30 75.59 75.45
Lower girdle angle / 41.78 41.91 41.91 41.91 41.96 41.91 41.94 41.79
Halves angle, ° 41.75 41.85 41.87 41.82 41.88 41.92 41.85 41.70
Facet Twist, ° 0.33 0.53 0.16 0.22 0.08 0.39 0.08 0.43
Crown height, mm 1.497 1.521 1.498 1.510 1.500 1.513 1.514 1.508
Pavilion height, mm 4.256 4.275 4.270 4.267 4.250 4.273 4.266 4.278
Table, mm 5.697 5.641 5.664 5.698 – – – –
Culet, mm – – – – – – – –
Girdle height bezel, mm 0.422 0.379 0.408 0.399 0.425 0.389 0.396 0.389
 
Measurement as per OctoNus theory:
Crown angle, ° 35.05 35.07 35.12 35.23 – – – –
Pavilion angle, ° 40.54 40.67 40.68 40.67 – – – –
MIC, mm 9.928 Extra Facet Crown No –
Girdle to MIC, mm 0.016 Extra Facet Pavilion No –
Paint / Dig Avg Type Cut Grade Max Dev Sym Grade
Crown, ° -0.43 Digging N/A -1.58 EX
Crown,notch. 0.1, Very small 0.4
Pavilion, ° -0.03 N/A -0.38 EX
Pavilion,notch. 0.0, Negligible 0.1