General information
Model	st5
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.75, 0.7502
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	E
Symmetry appraiser title	Internal
Overall symmetry quality	VG
Spread	-0.01 ct, -0.95%
AGS Spread	-0.01 ct, -1.27%
Measurements	5.854 (5.842-5.861) x 3.607 / 0.009 mm
Girdle to MIC	0.009 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.854
Crown height	0.852
Pavilion depth	2.574
Total height	3.607
Table	3.370
Culet	0.021
Girdle Bezel	0.180
Girdle Bone	0.185
Girdle Valley	0.088

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.854	5.842	5.861	0.33%	E	EX	5.857	5.851	5.854	5.856
Crown angle, °	34.44	34.29	34.51	0.23	Grading	EX	34.40	34.39	34.48	34.49	34.47	34.48	34.29	34.51
Pavilion angle, °	41.45	41.19	41.72	0.53	Grading	EX	41.64	41.45	41.31	41.19	41.26	41.41	41.63	41.72
Total height, %	61.62				E
Crown height, %	14.56	14.40	14.69	0.29	E	EX	14.48	14.56	14.69	14.69	14.66	14.49	14.40	14.49
Pavilion depth, %	43.97	43.83	44.16	0.33	N/A	EX	43.89	43.83	43.95	43.87	44.00	43.97	44.16	44.13
Table, %	57.57	57.53	57.60	0.07	Grading	EX	57.53	57.56	57.60	57.58
Culet, %	0.36	0.27	0.43	0.17	E	EX
Girdle Bezel, %	3.08	2.91	3.29	0.38	E	EX	3.29	3.22	2.93	3.07	2.91	3.16	3.08	3.00
Girdle Bone, %	3.16	3.02	3.39	0.38		EX	3.23	3.04	3.39	3.17	3.26	3.09	3.07	3.02
Girdle Valley, %	1.51	1.29	1.88	0.59	E	EX	1.64	1.88	1.43	1.43	1.40	1.75	1.36	1.40
							1.48	1.46	1.73	1.38	1.55	1.32	1.29	1.67
Star: Upper ratio, %	52.90:	52.01:	54.23:	2.22			52.75:	52.01:	52.43:	52.24:	53.37:	52.64:	54.23:	53.56:
	47.10	47.99	45.77				47.25	47.99	47.57	47.76	46.63	47.36	45.77	46.44
Star angle, °	22.22	22.08	22.31	0.24		EX	22.24	22.20	22.28	22.17	22.08	22.31	22.15	22.30
Upper girdle angle, °	41.26	40.65	41.49	0.84		EX	41.28	41.28	41.09	41.46	41.03	41.35	41.18	41.30
							41.06	41.49	40.65	41.37	41.24	41.44	41.45	41.43
Lower girdle angle / Halves angle, °	42.51	42.25	42.85	0.60		EX	42.67	42.52	42.50	42.40	42.35	42.25	42.25	42.25
							42.27	42.37	42.54	42.65	42.71	42.77	42.85	42.75
Twist, °	0.67	0.27	1.11	0.84		EX	0.95	0.99	1.11	0.34	0.37	0.37	0.27	1.00
Crown height, mm	0.852	0.843	0.860	0.017	E	EX	0.847	0.852	0.860	0.860	0.858	0.848	0.843	0.848
Pavilion depth, mm	2.574	2.566	2.585	0.019	N/A	EX	2.569	2.566	2.573	2.568	2.576	2.574	2.585	2.583
Table, mm	3.370	3.368	3.372	0.004	Grading	EX	3.368	3.370	3.372	3.370
Culet, mm	0.021	0.016	0.025	0.010	E	EX
Girdle Bezel, mm	0.180	0.170	0.192	0.022	E	EX	0.192	0.188	0.172	0.180	0.170	0.185	0.180	0.176
Girdle Bone, mm	0.185	0.177	0.199	0.022		EX	0.189	0.178	0.199	0.186	0.191	0.181	0.180	0.177
Girdle Valley, mm	0.088	0.076	0.110	0.034	E	EX	0.096	0.110	0.084	0.084	0.082	0.103	0.079	0.082
							0.087	0.086	0.101	0.081	0.091	0.077	0.076	0.098
Fish eye effect, °	10.54				N/A
Culet through Crown Bezel, °	11.12				N/A
Measurement as per OctoNus theory
Crown angle, °	34.44	34.38	34.50	0.12			34.44	34.43	34.38	34.50
Pavilion angle, °	41.45	41.43	41.47	0.04			41.45	41.43	41.47	41.45

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	-0.14	-0.12	0.12	-0.23	0.30	-0.09	0.21
Lower girdle facets / Halves	0.10	0.13	-0.04	0.09	-0.03	0.08	0.14	0.00
	0.05	0.08	0.13	0.07	-0.08	-0.00	0.03	0.08
Crown	0.95	0.86	0.99	0.46	0.14	0.68	0.17	1.21
Upper girdle facets	0.39	0.34	-0.40	0.24	-0.36	0.36	-0.21	-0.29
	-1.06	0.49	-1.02	0.49	-0.48	1.56	0.23	0.93
Star facets	1.85	1.46	1.31	1.19	1.91	1.59	1.58	2.00

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.37 ± 0.22, %	0.022 ± 0.013, mm
Girdle-Table offset by table axis	0.13 ± 0.19, %	0.007 ± 0.011, mm
Table-Culet offset by table axis	0.35 ± 0.23, %	0.020 ± 0.014, mm
Girdle to table-culet line offset	0.35, %	0.020, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.854, 100%
Width-wise culet shift ratio	2.956 mm, 50.49 %	2.901 mm, 49.56 %
Lengh-wise culet shift ratio	2.915 mm, 49.80 %	2.939 mm, 50.21 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.44	Painting	EX	-1.70	2.45	EX
Crown painting, notches	0.1, Very small			0.5	0.7
Pavilion painting, °	-0.01		EX	0.28	0.55	EX
Pavilion painting, notches	0.0, Negligible			0.1	0.1

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-0.56	0.52	-1.26	0.75	-1.35	0.10	-0.67	0.43
	-1.20	0.18	-1.70	-0.32	-0.65	-0.35	-0.97	0.02
Crown painting, notches	0.1	0.1	0.3	0.2	0.4	0.0	0.2	0.1
	0.3	0.0	0.5	0.1	0.2	0.1	0.3	0.0
Pavilion painting, °	0.10	-0.27	0.10	-0.21	0.09	0.04	0.02	-0.23
	0.28	0.22	-0.18	-0.17	0.02	0.22	-0.18	-0.08
Pavilion painting, notches	0.0	0.1	0.0	0.1	0.0	0.0	0.0	0.1
	0.1	0.1	0.0	0.0	0.0	0.1	0.0	0.0

 

Cut parameters description

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