General information
Model	st3
Expert name	Makoed A.G.
Report date	09.12.2007
Real weight, ct
Calculated weight, ct	0.71, 0.7095
Appraiser title	GIA_PCTG_StarCul
Overall cut quality	V
Symmetry appraiser title	Internal
Overall symmetry quality	EX
Spread	-0.01 ct, -2.03%
AGS Spread	-0.02 ct, -2.35%
Measurements	5.727 (5.720-5.739) x 3.509 / 0.018 mm
Girdle to MIC	0.018 mm
Extra Facet / Nat	No
Average values, mm
Diameter	5.727
Crown height	0.895
Pavilion depth	2.427
Total height	3.509
Table	3.280
Culet	0.023
Girdle Bezel	0.187
Girdle Bone	0.180
Girdle Valley	0.086

 

Parameter	Avg	Min	Max	Dev	Cut	Sym	1	2	3	4	5	6	7	8
Diameter, mm	5.727	5.720	5.739	0.34%	E	EX	5.722	5.731	5.730	5.728
Crown angle, °	36.15	35.96	36.48	0.53	Grading	EX	36.05	35.96	36.04	36.29	36.10	36.18	36.48	36.08
Pavilion angle, °	40.40	40.26	40.55	0.29	Grading	EX	40.51	40.37	40.33	40.26	40.34	40.36	40.55	40.50
Total height, %	61.26				E
Crown height, %	15.62	15.41	15.80	0.39	E	EX	15.62	15.80	15.78	15.74	15.56	15.41	15.60	15.43
Pavilion depth, %	42.38	42.13	42.63	0.50	N/A	EX	42.30	42.46	42.34	42.13	42.34	42.34	42.63	42.52
Table, %	57.26	57.13	57.40	0.27	Grading	EX	57.13	57.26	57.27	57.40
Culet, %	0.41	0.30	0.50	0.20	E	EX
Girdle Bezel, %	3.26	3.00	3.52	0.51	E	EX	3.34	3.00	3.13	3.40	3.37	3.52	3.04	3.32
Girdle Bone, %	3.14	2.80	3.35	0.55		EX	3.20	3.27	3.35	3.15	2.92	3.16	2.80	3.32
Girdle Valley, %	1.49	1.28	1.85	0.57	E	EX	1.39	1.32	1.45	1.60	1.45	1.73	1.55	1.35
							1.46	1.50	1.61	1.36	1.28	1.37	1.63	1.85
Star: Upper ratio, %	52.77:	52.07:	53.86:	1.80			53.19:	52.69:	53.86:	52.82:	52.07:	52.10:	52.49:	52.95:
	47.23	47.93	46.14				46.81	47.31	46.14	47.18	47.93	47.90	47.51	47.05
Star angle, °	23.57	23.19	24.02	0.83		EX	23.69	23.19	23.65	24.02	23.42	23.48	23.37	23.70
Upper girdle angle, °	43.32	42.90	43.72	0.82		EX	43.04	42.94	43.32	43.41	43.43	43.59	42.90	42.92
							43.51	43.72	43.55	43.41	43.08	43.55	43.41	43.43
Lower girdle angle / Halves angle, °	41.51	41.32	41.64	0.31		EX	41.59	41.55	41.41	41.39	41.46	41.41	41.37	41.32
							41.52	41.62	41.49	41.58	41.63	41.64	41.53	41.59
Twist, °	0.42	0.02	0.85	0.84		EX	0.30	0.13	0.85	0.63	0.25	0.37	0.02	0.78
Crown height, mm	0.895	0.883	0.905	0.022	E	EX	0.895	0.905	0.904	0.902	0.891	0.883	0.893	0.884
Pavilion depth, mm	2.427	2.413	2.441	0.029	N/A	EX	2.422	2.432	2.425	2.413	2.425	2.425	2.441	2.436
Table, mm	3.280	3.272	3.287	0.015	Grading	EX	3.272	3.279	3.280	3.287
Culet, mm	0.023	0.017	0.029	0.012	E	EX
Girdle Bezel, mm	0.187	0.172	0.201	0.029	E	EX	0.192	0.172	0.179	0.195	0.193	0.201	0.174	0.190
Girdle Bone, mm	0.180	0.160	0.192	0.031		EX	0.183	0.187	0.192	0.180	0.167	0.181	0.160	0.190
Girdle Valley, mm	0.086	0.073	0.106	0.033	E	EX	0.080	0.076	0.083	0.091	0.083	0.099	0.089	0.077
							0.084	0.086	0.092	0.078	0.073	0.078	0.094	0.106
Fish eye effect, °	6.37				N/A
Culet through Crown Bezel, °	8.34				N/A
Measurement as per OctoNus theory
Crown angle, °	36.15	36.07	36.26	0.20			36.08	36.07	36.26	36.19
Pavilion angle, °	40.40	40.36	40.44	0.07			40.42	40.36	40.44	40.38

Azimuths deviation from ideal, °	1	2	3	4	5	6	7	8
Pavilion	0.00	0.29	-0.30	0.36	0.56	0.24	0.44	0.45
Lower girdle facets / Halves	0.51	-0.42	0.49	-0.04	0.63	-0.22	1.00	0.33
	0.99	-0.87	1.08	0.55	0.48	-0.16	0.55	0.14
Crown	0.30	0.15	0.55	0.99	0.31	0.61	0.43	1.23
Upper girdle facets	-0.11	0.51	0.69	0.26	0.48	0.87	-0.33	0.76
	0.34	0.31	0.48	1.28	-0.66	0.91	1.44	0.41
Star facets	-0.23	0.11	0.21	-0.15	-0.66	-0.24	-0.34	0.68

	Girdle center		Culet center		Table center

Offset
Girdle-Culet offset by table axis	0.22 ± 0.22, %	0.012 ± 0.013, mm
Girdle-Table offset by table axis	0.25 ± 0.20, %	0.014 ± 0.011, mm
Table-Culet offset by table axis	0.34 ± 0.24, %	0.019 ± 0.014, mm
Girdle to table-culet line offset	0.34, %	0.019, mm

Culet shift ratio by main diameter
Main diameter (avg)	5.727, 100%
Width-wise culet shift ratio	2.873 mm, 50.17 %	2.848 mm, 49.73 %
Lengh-wise culet shift ratio	2.863 mm, 49.99 %	2.867 mm, 50.05 %

Paint / Dug	Avg	Type	Sym	Max	Dev	Sym
Crown painting, °	-0.19		EX	-1.32	1.85	EX
Crown painting, notches	0.0, Negligible			0.4	0.5
Pavilion painting, °	0.40	Digging	EX	1.10	1.37	EX
Pavilion painting, notches	0.1, Very small			0.3	0.4

Paint / Dug	1	2	3	4	5	6	7	8
Crown painting, °	-0.41	-0.36	0.53	0.29	-0.07	0.12	-1.32	-0.45
	0.03	0.30	-0.13	-0.85	-1.08	0.32	0.21	-0.11
Crown painting, notches	0.1	0.1	0.1	0.1	0.0	0.0	0.4	0.1
	0.0	0.1	0.0	0.2	0.3	0.1	0.1	0.0
Pavilion painting, °	0.51	0.71	0.21	-0.26	0.93	0.58	0.64	0.23
	0.43	1.10	0.84	-0.11	0.04	0.61	0.10	-0.14
Pavilion painting, notches	0.1	0.2	0.1	0.1	0.2	0.2	0.2	0.1
	0.1	0.3	0.2	0.0	0.0	0.2	0.0	0.0

 

Cut parameters description

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