General information
Model	st9
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.71, 0.7120
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	E
Symmetry appraiser title	Internal
Overall symmetry quality	VG
Spread	0.00 ct, 0.49%
AGS Spread	0.00 ct, 0.17%
Measurements	5.775 (5.765-5.783) x 3.511 / 0.004 mm
Girdle to MIC	0.004 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.775
Crown height	0.845
Pavilion depth	2.496
Total height	3.511
Table	3.318
Culet	0.021
Girdle Bezel	0.170
Girdle Bone	0.186
Girdle Valley	0.083

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.775	5.765	5.783	0.31%	E	EX	5.777	5.782	5.774	5.772
Crown angle, °	34.48	34.34	34.56	0.22	Grading	EX	34.56	34.52	34.54	34.41	34.46	34.48	34.34	34.54
Pavilion angle, °	40.94	40.75	41.05	0.30	Grading	EX	40.86	40.80	40.75	40.97	41.02	41.05	41.05	41.01
Total height, %	60.80				E
Crown height, %	14.63	14.40	14.89	0.49	E	EX	14.45	14.60	14.89	14.79	14.74	14.69	14.40	14.45
Pavilion depth, %	43.22	42.88	43.64	0.75	N/A	VG	43.58	43.28	42.88	42.98	42.95	43.09	43.36	43.64
Table, %	57.46	57.29	57.57	0.28	Grading	EX	57.56	57.57	57.29	57.40
Culet, %	0.37	0.28	0.44	0.16	E	EX
Girdle Bezel, %	2.95	2.72	3.11	0.39	E	EX	2.77	2.92	2.98	3.03	3.11	3.02	3.05	2.72
Girdle Bone, %	3.23	3.03	3.32	0.30		EX	3.23	3.21	3.03	3.27	3.29	3.24	3.22	3.32
Girdle Valley, %	1.44	1.14	1.66	0.53	E	EX	1.34	1.51	1.52	1.46	1.41	1.36	1.50	1.28
							1.55	1.66	1.49	1.50	1.42	1.14	1.39	1.55
Star: Upper ratio, %	53.76:	52.77:	54.91:	2.14			53.51:	52.77:	53.14:	53.24:	53.86:	54.33:	54.30:	54.91:
	46.24	47.23	45.09				46.49	47.23	46.86	46.76	46.14	45.67	45.70	45.09
Star angle, °	22.41	22.18	22.69	0.51		EX	22.25	22.42	22.55	22.38	22.53	22.69	22.18	22.28
Upper girdle angle, °	41.01	40.70	41.35	0.65		EX	41.09	41.19	41.35	41.01	40.88	41.21	40.84	40.70
							40.93	40.97	41.04	41.26	40.85	40.97	40.96	40.95
Lower girdle angle / Halves angle, °	42.03	41.84	42.17	0.33		EX	41.91	41.89	41.84	41.84	41.84	42.07	42.10	42.11
							42.15	42.09	42.11	42.11	42.17	42.17	42.08	42.01
Twist, °	0.47	0.05	1.01	0.96		EX	1.01	1.00	0.57	0.24	0.18	0.05	0.47	0.20
Crown height, mm	0.845	0.831	0.860	0.029	E	EX	0.834	0.843	0.860	0.854	0.851	0.849	0.831	0.834
Pavilion depth, mm	2.496	2.477	2.520	0.044	N/A	VG	2.517	2.500	2.477	2.482	2.481	2.489	2.504	2.520
Table, mm	3.318	3.309	3.325	0.016	Grading	EX	3.324	3.325	3.309	3.315
Culet, mm	0.021	0.016	0.025	0.009	E	EX
Girdle Bezel, mm	0.170	0.157	0.179	0.022	E	EX	0.160	0.169	0.172	0.175	0.179	0.174	0.176	0.157
Girdle Bone, mm	0.186	0.175	0.192	0.017		EX	0.187	0.185	0.175	0.189	0.190	0.187	0.186	0.192
Girdle Valley, mm	0.083	0.066	0.096	0.030	E	EX	0.078	0.087	0.088	0.084	0.081	0.078	0.087	0.074
							0.089	0.096	0.086	0.086	0.082	0.066	0.081	0.090
Fish eye effect, °	8.52				N/A
Culet through Crown Bezel, °	11.72				N/A
Measurement as per OctoNus theory
Crown angle, °	34.48	34.44	34.51	0.07			34.51	34.50	34.44	34.48
Pavilion angle, °	40.94	40.90	40.99	0.09			40.94	40.93	40.90	40.99

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	0.31	0.65	0.66	0.68	0.50	0.47	0.01
Lower girdle facets / Halves	0.22	0.51	0.18	0.31	0.26	0.17	0.13	0.46
	0.46	0.52	0.26	0.31	0.10	0.19	0.06	0.18
Crown	1.01	1.32	1.22	0.42	0.50	0.56	0.01	0.21
Upper girdle facets	-0.13	2.20	1.10	2.10	0.36	0.48	-0.75	1.44
	-0.70	1.24	-0.76	0.16	-1.35	1.46	-1.13	2.06
Star facets	1.30	1.72	0.89	1.45	0.90	0.66	0.76	1.08

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.42 ± 0.22, %	0.024 ± 0.013, mm
Girdle-Table offset by table axis	0.43 ± 0.20, %	0.025 ± 0.011, mm
Table-Culet offset by table axis	0.81 ± 0.24, %	0.047 ± 0.014, mm
Girdle to table-culet line offset	0.81, %	0.047, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.775, 100%
Width-wise culet shift ratio	2.858 mm, 49.49 %	2.919 mm, 50.54 %
Lengh-wise culet shift ratio	2.887 mm, 49.99 %	2.887 mm, 49.99 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.91	Painting	EX	-1.35	1.29	EX
Crown painting, notches	0.2, Very small			0.4	0.3
Pavilion painting, °	-0.06		EX	-0.53	1.01	EX
Pavilion painting, notches	0.0, Negligible			0.1	0.3

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-1.14	-0.88	-0.21	-0.88	-0.86	-0.06	-1.17	-0.93
	-1.20	-0.68	-1.32	-0.15	-1.35	-1.25	-1.34	-1.05
Crown painting, notches	0.3	0.2	0.1	0.2	0.2	0.0	0.3	0.2
	0.3	0.2	0.4	0.0	0.4	0.3	0.4	0.3
Pavilion painting, °	0.22	-0.20	-0.14	0.34	-0.39	0.48	-0.53	0.23
	-0.22	-0.01	-0.24	0.17	-0.37	-0.18	0.05	-0.18
Pavilion painting, notches	0.1	0.1	0.0	0.1	0.1	0.1	0.1	0.1
	0.1	0.0	0.1	0.0	0.1	0.0	0.0	0.0

 

Cut parameters description

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