General information
Model	st3_2
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.74, 0.7422
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	V
Symmetry appraiser title	Internal
Overall symmetry quality	VG
Spread	-0.00 ct, -0.20%
AGS Spread	-0.00 ct, -0.54%
Measurements	5.842 (5.833-5.851) x 3.551 / 0.005 mm
Girdle to MIC	0.005 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.842
Crown height	0.913
Pavilion depth	2.473
Total height	3.551
Table	3.342
Culet	0.021
Girdle Bezel	0.164
Girdle Bone	0.172
Girdle Valley	0.070

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.842	5.833	5.851	0.31%	E	EX	5.842	5.851	5.847	5.844
Crown angle, °	36.08	36.00	36.20	0.20	Grading	EX	36.20	36.15	36.09	36.04	36.08	36.00	36.04	36.07
Pavilion angle, °	40.34	40.27	40.46	0.18	Grading	EX	40.33	40.27	40.28	40.27	40.35	40.37	40.46	40.40
Total height, %	60.79				E
Crown height, %	15.63	15.52	15.73	0.21	E	EX	15.73	15.71	15.69	15.56	15.63	15.52	15.55	15.66
Pavilion depth, %	42.34	42.19	42.50	0.31	N/A	EX	42.19	42.22	42.36	42.32	42.42	42.39	42.50	42.31
Table, %	57.20	57.11	57.30	0.19	Grading	EX	57.11	57.30	57.25	57.15
Culet, %	0.36	0.24	0.44	0.20	E	EX
Girdle Bezel, %	2.81	2.72	2.88	0.16	E	EX	2.87	2.86	2.75	2.86	2.72	2.88	2.74	2.78
Girdle Bone, %	2.95	2.80	3.11	0.31		EX	3.00	2.80	3.09	3.11	2.90	2.97	2.85	2.89
Girdle Valley, %	1.19	1.06	1.34	0.27	E	EX	1.12	1.34	1.11	1.14	1.06	1.23	1.32	1.20
							1.20	1.22	1.23	1.21	1.08	1.22	1.14	1.30
Star: Upper ratio, %	52.36:	51.36:	53.36:	2.00			52.70:	51.36:	52.44:	53.32:	52.24:	53.36:	51.80:	51.66:
	47.64	48.64	46.64				47.30	48.64	47.56	46.68	47.76	46.64	48.20	48.34
Star angle, °	23.45	23.24	23.65	0.40		EX	23.65	23.63	23.63	23.60	23.27	23.24	23.32	23.28
Upper girdle angle, °	43.03	42.83	43.40	0.58		EX	43.03	43.03	42.93	42.97	42.85	42.86	42.90	43.01
							43.24	43.15	43.22	43.40	42.83	42.86	43.01	43.15
Lower girdle angle / Halves angle, °	41.43	41.30	41.60	0.30		EX	41.43	41.33	41.33	41.30	41.39	41.35	41.37	41.44
							41.43	41.43	41.48	41.60	41.56	41.51	41.51	41.47
Twist, °	0.47	0.10	1.18	1.08		VG	0.62	0.52	0.35	0.28	0.10	0.13	0.60	1.18
Crown height, mm	0.913	0.907	0.919	0.012	E	EX	0.919	0.918	0.917	0.909	0.913	0.907	0.908	0.915
Pavilion depth, mm	2.473	2.465	2.483	0.018	N/A	EX	2.465	2.466	2.475	2.472	2.478	2.477	2.483	2.472
Table, mm	3.342	3.336	3.347	0.011	Grading	EX	3.336	3.347	3.345	3.338
Culet, mm	0.021	0.014	0.026	0.012	E	EX
Girdle Bezel, mm	0.164	0.159	0.168	0.009	E	EX	0.167	0.167	0.161	0.167	0.159	0.168	0.160	0.162
Girdle Bone, mm	0.172	0.164	0.182	0.018		EX	0.175	0.164	0.180	0.182	0.169	0.174	0.167	0.169
Girdle Valley, mm	0.070	0.062	0.078	0.016	E	EX	0.066	0.078	0.065	0.066	0.062	0.072	0.077	0.070
							0.070	0.071	0.072	0.071	0.063	0.071	0.067	0.076
Fish eye effect, °	6.18				N/A
Culet through Crown Bezel, °	8.85				N/A
Measurement as per OctoNus theory
Crown angle, °	36.08	36.05	36.14	0.09			36.14	36.07	36.07	36.05
Pavilion angle, °	40.34	40.32	40.37	0.05			40.34	40.32	40.37	40.34

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	0.33	0.41	0.53	0.46	0.44	0.38	0.03
Lower girdle facets / Halves	0.19	0.46	0.14	0.27	-0.08	0.03	0.11	0.08
	-0.02	0.17	0.12	0.18	0.15	0.29	0.18	0.24
Crown	0.62	0.86	0.06	0.25	0.36	0.31	0.98	1.21
Upper girdle facets	-0.01	0.74	0.43	-0.33	-0.52	0.70	-0.11	0.40
	0.00	-0.10	0.08	0.60	0.46	1.11	0.81	0.44
Star facets	1.15	1.16	0.68	0.50	-0.01	0.39	0.59	0.43

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.18 ± 0.22, %	0.011 ± 0.013, mm
Girdle-Table offset by table axis	0.13 ± 0.20, %	0.007 ± 0.011, mm
Table-Culet offset by table axis	0.24 ± 0.23, %	0.014 ± 0.014, mm
Girdle to table-culet line offset	0.24, %	0.014, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.842, 100%
Width-wise culet shift ratio	2.929 mm, 50.14 %	2.912 mm, 49.85 %
Lengh-wise culet shift ratio	2.917 mm, 49.94 %	2.929 mm, 50.14 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.15		EX	-0.63	1.04	EX
Crown painting, notches	0.0, Negligible			0.2	0.3
Pavilion painting, °	-0.06		EX	0.50	0.99	EX
Pavilion painting, notches	0.0, Negligible			0.1	0.3

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-0.63	0.11	-0.42	0.39	-0.58	-0.45	-0.36	-0.04
	-0.36	0.41	-0.23	0.38	-0.52	0.10	-0.40	0.18
Crown painting, notches	0.2	0.0	0.1	0.1	0.2	0.1	0.1	0.0
	0.1	0.1	0.1	0.1	0.1	0.0	0.1	0.0
Pavilion painting, °	0.19	-0.12	-0.20	0.14	-0.49	0.50	-0.42	0.38
	-0.48	0.28	-0.33	0.21	-0.23	-0.26	0.15	-0.24
Pavilion painting, notches	0.1	0.0	0.1	0.0	0.1	0.1	0.1	0.1
	0.1	0.1	0.1	0.1	0.1	0.1	0.0	0.1

 

Cut parameters description

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