General information
Model	st7
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.73, 0.7314
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	G
Symmetry appraiser title	Internal
Overall symmetry quality	EX
Spread	0.01 ct, 1.20%
AGS Spread	0.01 ct, 0.88%
Measurements	5.843 (5.837-5.848) x 3.489 / 0.007 mm
Girdle to MIC	0.007 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.843
Crown height	0.856
Pavilion depth	2.452
Total height	3.489
Table	3.368
Culet	0.020
Girdle Bezel	0.181
Girdle Bone	0.188
Girdle Valley	0.087

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.843	5.837	5.848	0.19%	E	EX	5.846	5.844	5.844	5.843
Crown angle, °	34.57	34.35	34.76	0.41	Grading	EX	34.59	34.76	34.74	34.64	34.63	34.36	34.35	34.48
Pavilion angle, °	40.07	39.87	40.29	0.42	Grading	EX	40.08	40.03	39.92	39.87	40.09	40.10	40.29	40.21
Total height, %	59.72				E
Crown height, %	14.65	14.52	14.86	0.34	E	EX	14.69	14.86	14.70	14.64	14.65	14.54	14.60	14.52
Pavilion depth, %	41.96	41.78	42.24	0.46	N/A	EX	41.78	41.84	41.83	41.79	42.19	41.96	42.24	42.04
Table, %	57.64	57.47	57.81	0.34	Grading	EX	57.64	57.47	57.62	57.81
Culet, %	0.34	0.28	0.40	0.12	E	EX
Girdle Bezel, %	3.10	2.87	3.28	0.41	E	EX	3.23	3.00	3.17	3.28	2.89	3.22	2.87	3.13
Girdle Bone, %	3.22	2.96	3.42	0.47		EX	3.40	3.06	3.33	2.96	3.09	3.18	3.33	3.42
Girdle Valley, %	1.49	1.26	1.65	0.40	E	EX	1.63	1.54	1.48	1.36	1.59	1.65	1.51	1.36
							1.26	1.50	1.48	1.35	1.35	1.55	1.59	1.65
Star: Upper ratio, %	55.25:	54.44:	56.17:	1.73			54.56:	54.72:	56.17:	55.04:	54.44:	55.67:	55.88:	55.49:
	44.75	45.56	43.83				45.44	45.28	43.83	44.96	45.56	44.33	44.12	44.51
Star angle, °	22.72	22.36	23.14	0.79		EX	22.73	22.78	22.82	23.14	22.36	22.64	22.61	22.68
Upper girdle angle, °	42.16	41.90	42.46	0.56		EX	42.14	42.17	42.16	42.25	42.22	42.38	42.33	42.46
							42.21	42.22	41.99	42.04	41.90	42.04	41.95	42.11
Lower girdle angle / Halves angle, °	41.15	40.96	41.33	0.37		EX	41.14	41.10	41.06	41.08	41.01	40.98	40.96	41.11
							41.13	41.12	41.21	41.31	41.33	41.27	41.31	41.28
Twist, °	0.14	0.02	0.40	0.39		EX	0.15	0.02	0.15	0.08	0.19	0.04	0.11	0.40
Crown height, mm	0.856	0.848	0.868	0.020	E	EX	0.859	0.868	0.859	0.856	0.856	0.849	0.853	0.848
Pavilion depth, mm	2.452	2.441	2.468	0.027	N/A	EX	2.441	2.445	2.444	2.442	2.465	2.452	2.468	2.456
Table, mm	3.368	3.358	3.378	0.020	Grading	EX	3.368	3.358	3.367	3.378
Culet, mm	0.020	0.016	0.023	0.007	E	EX
Girdle Bezel, mm	0.181	0.168	0.192	0.024	E	EX	0.189	0.175	0.185	0.192	0.169	0.188	0.168	0.183
Girdle Bone, mm	0.188	0.173	0.200	0.027		EX	0.198	0.179	0.195	0.173	0.180	0.186	0.194	0.200
Girdle Valley, mm	0.087	0.073	0.096	0.023	E	EX	0.095	0.090	0.087	0.079	0.093	0.096	0.088	0.080
							0.073	0.088	0.086	0.079	0.079	0.090	0.093	0.096
Fish eye effect, °	4.86				N/A
Culet through Crown Bezel, °	12.79				N/A
Measurement as per OctoNus theory
Crown angle, °	34.57	34.55	34.61	0.06			34.61	34.56	34.55	34.56
Pavilion angle, °	40.07	40.04	40.10	0.07			40.08	40.07	40.10	40.04

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	0.10	0.07	0.22	0.13	0.11	0.14	-0.08
Lower girdle facets / Halves	-0.48	0.14	-0.19	-0.27	-0.43	-0.37	-0.12	0.34
	-0.69	-0.34	-0.26	0.25	-0.47	-0.22	-0.30	-1.02
Crown	0.15	0.11	0.22	0.30	-0.06	0.06	0.03	0.32
Upper girdle facets	0.06	0.31	0.02	-0.00	-0.20	0.19	-0.07	-0.10
	-0.05	-0.34	-0.34	0.22	-0.20	0.54	0.10	0.35
Star facets	-0.85	-0.78	0.13	-0.70	-0.93	-0.92	-1.55	-0.69

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.26 ± 0.22, %	0.015 ± 0.013, mm
Girdle-Table offset by table axis	0.03 ± 0.20, %	0.002 ± 0.011, mm
Table-Culet offset by table axis	0.23 ± 0.23, %	0.014 ± 0.014, mm
Girdle to table-culet line offset	0.23, %	0.014, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.843, 100%
Width-wise culet shift ratio	2.936 mm, 50.26 %	2.909 mm, 49.79 %
Lengh-wise culet shift ratio	2.919 mm, 49.96 %	2.925 mm, 50.07 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.12		EX	-0.43	0.83	EX
Crown painting, notches	0.0, Negligible			0.1	0.2
Pavilion painting, °	-0.09		EX	1.02	1.84	EX
Pavilion painting, notches	0.0, Negligible			0.3	0.5

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-0.09	-0.19	-0.10	0.23	-0.43	0.11	-0.37	0.05
	0.00	0.40	-0.40	-0.19	-0.23	-0.22	-0.22	-0.20
Crown painting, notches	0.0	0.1	0.0	0.1	0.1	0.0	0.1	0.0
	0.0	0.1	0.1	0.1	0.1	0.1	0.1	0.1
Pavilion painting, °	-0.48	-0.05	-0.29	0.34	-0.51	0.59	-0.34	-0.21
	-0.82	0.45	-0.36	-0.10	-0.62	0.14	-0.21	1.02
Pavilion painting, notches	0.1	0.0	0.1	0.1	0.1	0.2	0.1	0.1
	0.2	0.1	0.1	0.0	0.2	0.0	0.1	0.3

 

Cut parameters description

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