General information
Model	st6
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.72, 0.7275
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	E
Symmetry appraiser title	Internal
Overall symmetry quality	VG
Spread	0.01 ct, 0.77%
AGS Spread	0.00 ct, 0.45%
Measurements	5.808 (5.798-5.815) x 3.578 / 0.005 mm
Girdle to MIC	0.005 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.808
Crown height	0.846
Pavilion depth	2.570
Total height	3.578
Table	3.351
Culet	0.019
Girdle Bezel	0.161
Girdle Bone	0.167
Girdle Valley	0.065

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.808	5.798	5.815	0.30%	E	EX	5.812	5.806	5.814	5.813
Crown angle, °	34.47	34.31	34.66	0.35	Grading	EX	34.34	34.31	34.42	34.49	34.66	34.65	34.49	34.38
Pavilion angle, °	41.61	41.51	41.77	0.26	Grading	EX	41.77	41.60	41.56	41.51	41.51	41.56	41.65	41.73
Total height, %	61.60				E
Crown height, %	14.56	14.34	14.76	0.41	E	EX	14.34	14.48	14.51	14.66	14.67	14.76	14.59	14.50
Pavilion depth, %	44.25	43.90	44.61	0.72	N/A	VG	44.61	44.51	44.26	44.08	43.96	43.90	44.16	44.51
Table, %	57.71	57.50	58.00	0.50	Grading	EX	58.00	57.50	57.68	57.64
Culet, %	0.33	0.30	0.36	0.06	E	EX
Girdle Bezel, %	2.78	2.59	2.97	0.38	E	EX	2.61	2.62	2.83	2.82	2.97	2.95	2.83	2.59
Girdle Bone, %	2.87	2.78	3.01	0.23		EX	2.82	2.87	2.78	2.95	3.01	2.79	2.83	2.91
Girdle Valley, %	1.13	0.95	1.34	0.39	E	EX	1.02	0.95	1.00	1.02	1.20	1.13	1.26	1.19
							1.34	1.28	1.08	1.13	1.21	1.03	1.11	1.05
Star: Upper ratio, %	53.27:	52.03:	54.73:	2.70			53.33:	53.59:	52.03:	52.91:	52.89:	53.11:	53.58:	54.73:
	46.73	47.97	45.27				46.67	46.41	47.97	47.09	47.11	46.89	46.42	45.27
Star angle, °	22.23	22.00	22.56	0.56		EX	22.13	22.11	22.28	22.00	22.09	22.19	22.56	22.46
Upper girdle angle, °	41.74	41.36	42.31	0.94		EX	41.83	41.41	42.11	41.55	42.04	41.38	42.13	42.31
							42.16	41.97	41.59	41.53	41.37	41.36	41.53	41.53
Lower girdle angle / Halves angle, °	42.66	42.53	42.80	0.27		EX	42.74	42.76	42.65	42.59	42.62	42.60	42.54	42.59
							42.55	42.53	42.72	42.71	42.74	42.80	42.72	42.76
Twist, °	0.61	0.22	1.24	1.02		VG	0.68	0.58	0.54	1.24	0.22	0.53	0.24	0.88
Crown height, mm	0.846	0.833	0.857	0.024	E	EX	0.833	0.841	0.843	0.851	0.852	0.857	0.848	0.842
Pavilion depth, mm	2.570	2.549	2.591	0.042	N/A	VG	2.591	2.585	2.570	2.560	2.553	2.549	2.565	2.585
Table, mm	3.351	3.339	3.369	0.029	Grading	EX	3.369	3.339	3.350	3.348
Culet, mm	0.019	0.017	0.021	0.004	E	EX
Girdle Bezel, mm	0.161	0.151	0.173	0.022	E	EX	0.151	0.152	0.165	0.164	0.173	0.171	0.164	0.151
Girdle Bone, mm	0.167	0.162	0.175	0.013		EX	0.164	0.167	0.162	0.171	0.175	0.162	0.165	0.169
Girdle Valley, mm	0.065	0.055	0.078	0.023	E	EX	0.059	0.055	0.058	0.059	0.070	0.066	0.073	0.069
							0.078	0.074	0.063	0.066	0.070	0.060	0.065	0.061
Fish eye effect, °	11.17				N/A
Culet through Crown Bezel, °	11.23				N/A
Measurement as per OctoNus theory
Crown angle, °	34.47	34.43	34.50	0.07			34.50	34.48	34.46	34.43
Pavilion angle, °	41.61	41.58	41.64	0.06			41.64	41.58	41.61	41.62

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	-0.17	-0.19	-0.07	-0.27	-0.21	-0.08	0.38
Lower girdle facets / Halves	-0.50	-0.66	-0.74	0.00	-0.34	-0.34	-0.31	-0.48
	-0.09	0.10	-0.03	-0.05	0.14	0.36	-0.36	0.43
Crown	-0.68	-0.75	-0.74	-1.32	-0.49	0.32	-0.32	-0.50
Upper girdle facets	-0.17	-0.53	0.21	-0.40	0.25	-0.61	-0.15	-0.68
	0.07	0.27	-0.71	-0.63	-1.19	0.11	-0.90	0.04
Star facets	-0.72	-0.66	-0.25	-0.61	0.53	-0.29	0.21	-1.01

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.19 ± 0.22, %	0.011 ± 0.013, mm
Girdle-Table offset by table axis	0.13 ± 0.20, %	0.008 ± 0.011, mm
Table-Culet offset by table axis	0.32 ± 0.24, %	0.019 ± 0.014, mm
Girdle to table-culet line offset	0.32, %	0.019, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.808, 100%
Width-wise culet shift ratio	2.899 mm, 49.92 %	2.913 mm, 50.16 %
Lengh-wise culet shift ratio	2.905 mm, 50.02 %	2.909 mm, 50.09 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.01		EX	1.17	2.20	EX
Crown painting, notches	0.0, Negligible			0.3	0.6
Pavilion painting, °	-0.10		EX	-0.74	1.22	EX
Pavilion painting, notches	0.0, Negligible			0.2	0.3

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	0.51	-0.21	0.96	-0.34	0.99	-0.70	1.17	0.19
	0.56	0.05	-1.03	0.31	-0.88	-0.61	-0.40	-0.71
Crown painting, notches	0.1	0.1	0.3	0.1	0.3	0.2	0.3	0.1
	0.1	0.0	0.3	0.1	0.2	0.2	0.1	0.2
Pavilion painting, °	-0.50	0.49	-0.56	-0.20	-0.15	0.27	-0.23	0.21
	0.18	-0.31	0.18	-0.03	0.22	0.02	-0.74	-0.43
Pavilion painting, notches	0.1	0.1	0.2	0.1	0.0	0.1	0.1	0.1
	0.0	0.1	0.0	0.0	0.1	0.0	0.2	0.1

 

Cut parameters description

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