General information
Model	st1
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.74, 0.7451
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	V
Symmetry appraiser title	Internal
Overall symmetry quality	VG
Spread	0.00 ct, 0.24%
AGS Spread	-0.00 ct, -0.07%
Measurements	5.851 (5.838-5.865) x 3.626 / 0.004 mm
Girdle to MIC	0.004 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.851
Crown height	0.876
Pavilion depth	2.598
Total height	3.626
Table	3.295
Culet	0.019
Girdle Bezel	0.153
Girdle Bone	0.174
Girdle Valley	0.069

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.851	5.838	5.865	0.46%	E	EX	5.852	5.844	5.847	5.851
Crown angle, °	34.50	34.13	34.74	0.61	Grading	VG	34.74	34.70	34.61	34.65	34.24	34.13	34.25	34.67
Pavilion angle, °	41.71	41.39	42.13	0.74	Grading	VG	41.40	41.39	41.52	41.78	41.97	42.13	41.97	41.52
Total height, %	61.98				E
Crown height, %	14.96	14.67	15.23	0.56	E	EX	14.82	15.00	15.21	15.23	14.99	14.93	14.67	14.87
Pavilion depth, %	44.40	44.05	44.73	0.68	N/A	EX	44.68	44.27	44.06	44.05	44.19	44.62	44.73	44.61
Table, %	56.32	56.09	56.48	0.40	Grading	EX	56.48	56.09	56.30	56.42
Culet, %	0.33	0.21	0.40	0.19	E	EX
Girdle Bezel, %	2.61	2.42	2.78	0.36	E	EX	2.48	2.72	2.71	2.71	2.78	2.42	2.58	2.49
Girdle Bone, %	2.98	2.70	3.14	0.43		EX	2.93	2.81	3.08	3.12	2.70	3.14	2.90	3.13
Girdle Valley, %	1.17	0.96	1.39	0.43	E	EX	1.29	1.23	1.14	1.21	1.10	1.17	1.22	1.11
							1.22	0.96	0.96	1.25	1.39	1.04	1.26	1.22
Star: Upper ratio, %	56.02:	54.07:	57.10:	3.03			56.64:	56.75:	54.07:	54.49:	55.70:	56.92:	56.49:	57.10:
	43.98	45.93	42.90				43.36	43.25	45.93	45.51	44.30	43.08	43.51	42.90
Star angle, °	22.93	22.76	23.04	0.28		EX	23.04	22.93	23.04	22.76	22.87	22.87	22.99	22.96
Upper girdle angle, °	41.11	40.18	42.14	1.95		VG	41.49	41.64	42.14	41.77	41.10	40.92	41.20	40.84
							41.21	40.94	40.18	40.87	40.68	40.82	40.88	41.14
Lower girdle angle / Halves angle, °	42.72	42.22	43.27	1.05		VG	42.22	42.33	42.37	42.53	42.46	42.70	42.94	43.04
							43.19	43.27	43.09	43.05	42.82	42.71	42.42	42.35
Twist, °	0.84	0.27	1.31	1.04		VG	0.98	1.21	0.62	1.31	1.03	0.27	0.97	0.34
Crown height, mm	0.876	0.858	0.891	0.033	E	EX	0.867	0.877	0.890	0.891	0.877	0.874	0.858	0.870
Pavilion depth, mm	2.598	2.577	2.617	0.040	N/A	EX	2.614	2.590	2.578	2.577	2.586	2.611	2.617	2.610
Table, mm	3.295	3.282	3.305	0.023	Grading	EX	3.305	3.282	3.294	3.301
Culet, mm	0.019	0.012	0.023	0.011	E	EX
Girdle Bezel, mm	0.153	0.142	0.163	0.021	E	EX	0.145	0.159	0.159	0.158	0.163	0.142	0.151	0.146
Girdle Bone, mm	0.174	0.158	0.184	0.025		EX	0.171	0.165	0.180	0.182	0.158	0.184	0.170	0.183
Girdle Valley, mm	0.069	0.056	0.081	0.025	E	EX	0.075	0.072	0.067	0.071	0.064	0.069	0.072	0.065
							0.071	0.056	0.056	0.073	0.081	0.061	0.074	0.071
Fish eye effect, °	12.35				N/A
Culet through Crown Bezel, °	9.45				N/A
Measurement as per OctoNus theory
Crown angle, °	34.50	34.42	34.66	0.24			34.49	34.42	34.43	34.66
Pavilion angle, °	41.71	41.65	41.76	0.11			41.68	41.76	41.74	41.65

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	-2.43	-0.06	-0.28	-0.31	-1.19	0.06	-0.14
Lower girdle facets / Halves	-2.81	-0.94	-2.44	-0.43	-2.13	0.26	-0.62	-0.29
	1.04	-0.82	-1.44	-0.07	-1.48	-1.36	-1.50	0.36
Crown	-0.98	-1.22	-0.69	-1.59	-1.34	-0.92	-0.92	-0.48
Upper girdle facets	-1.75	0.14	-1.33	0.11	-1.52	-0.24	-1.89	-0.19
	-1.32	-0.16	-3.08	0.65	-2.28	1.17	-2.69	0.69
Star facets	-0.18	-0.93	-1.11	-1.10	0.22	0.21	0.31	-0.14

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.75 ± 0.22, %	0.044 ± 0.013, mm
Girdle-Table offset by table axis	0.34 ± 0.19, %	0.020 ± 0.011, mm
Table-Culet offset by table axis	0.99 ± 0.23, %	0.058 ± 0.014, mm
Girdle to table-culet line offset	0.99, %	0.058, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.851, 100%
Width-wise culet shift ratio	2.882 mm, 49.25 %	2.970 mm, 50.77 %
Lengh-wise culet shift ratio	2.920 mm, 49.91 %	2.926 mm, 50.02 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-1.13	Painting	EX	-2.21	2.23	EX
Crown painting, notches	0.3, Small			0.6	0.6
Pavilion painting, °	-0.51	Painting	EX	-2.81	4.16	EX
Pavilion painting, notches	0.1, Very small			0.7	1.1

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-0.77	-1.36	-0.11	-0.80	-0.84	-1.35	-0.30	-1.16
	0.02	-0.75	-2.16	-1.57	-1.37	-1.65	-2.21	-1.67
Crown painting, notches	0.2	0.4	0.0	0.2	0.2	0.4	0.1	0.3
	0.0	0.2	0.6	0.4	0.4	0.4	0.6	0.4
Pavilion painting, °	-2.81	-1.49	-0.01	0.37	-2.07	-0.54	-0.34	-0.02
	1.35	-0.37	-0.26	0.13	-1.54	1.23	-1.37	-0.36
Pavilion painting, notches	0.7	0.4	0.0	0.1	0.6	0.1	0.1	0.0
	0.4	0.1	0.1	0.0	0.4	0.3	0.4	0.1

 

Cut parameters description

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