Yellow Sapphire 18K Yellow Gold Diamond Ring

Inside Diameter		Inside Circumference		Sizes
MM	Inches	MM	Inches	British
9.91	0.39	31.13	1.22	-
10.72	0.442	33.68	1.39	-
11.53	0.454	36.22	1.43	-
11.95	0.474	37.54	1.49	A
12.18	0.482	38.26	1.51	A 1/2
12.37	0.487	38.86	1.53	B
12.6	0.496	39.58	1.56	B 1/2
12.78	0.503	40.15	1.58	C
13	0.512	40.84	1.61	C 1/2
13.21	0.52	41.5	1.63	D
13.41	0.528	42.13	1.66	D 1/2
13.61	0.536	42.76	1.68	E
13.83	0.544	43.45	1.71	E 1/2
14.05	0.553	44.14	1.74	F
14.15	0.557	44.45	1.75	F 1/2
14.25	0.561	44.77	1.76	F 3/4
14.36	0.565	45.11	1.77	G
14.45	0.569	45.4	1.79	G 1/4
14.56	0.573	45.74	1.8	G 1/2
14.65	0.577	46.02	1.81	H
14.86	0.585	46.68	1.84	H 1/2
15.04	0.592	47.25	1.86	I
15.27	0.601	47.97	1.89	I 1/2
15.4	0.606	48.38	1.9	J
15.53	0.611	48.79	1.92	J 1/4
15.7	0.618	49.32	1.94	J 1/2
15.8	0.622	49.64	1.95	K
15.9	0.626	49.95	1.97	K 1/4
16	0.63	50.27	1.98	K 1/2
16.1	0.634	50.58	1.99	L
16.3	0.642	51.21	2.02	L 1/4
16.41	0.646	51.55	2.03	L 1/2
16.51	0.65	51.87	2.04	M
16.71	0.658	52.5	2.07	M 1/2
16.92	0.666	53.16	2.09	N
17.13	0.674	53.82	2.12	N 1/2
17.35	0.683	54.51	2.15	O
17.45	0.687	54.82	2.16	O 1/2
17.75	0.699	55.76	2.2	P
17.97	0.707	56.45	2.22	P 1/2
18.19	0.716	57.15	2.25	Q
18.35	0.722	57.65	2.27	Q 1/2
18.53	0.729	58.21	2.29	Q 3/4
18.61	0.733	58.47	2.3	R
18.69	0.736	58.72	2.31	R 1/4
18.8	0.74	59.06	2.32	R 1/2
18.89	0.748	59.34	2.35	R 3/4
19.1	0.752	60	2.36	S
19.22	0.757	60.38	2.38	S 1/4
19.31	0.76	60.66	2.39	S 1/2
19.41	0.764	60.98	2.4	S 3/4
19.51	0.768	61.29	2.41	T
19.62	0.772	61.64	2.43	T 1/4
19.84	0.781	62.33	2.45	T 1/2
20.02	0.788	62.89	2.48	U
20.2	0.797	63.46	2.5	U 1/2
20.32	0.8	63.84	2.51	V
20.44	0.805	64.21	2.53	V 1/4
20.68	0.814	64.97	2.56	V 1/2
20.76	0.817	65.22	2.57	W
20.85	0.821	65.5	2.58	W 1/4
20.94	0.824	65.78	2.59	W 1/2
21.08	0.83	66.22	2.61	W 3/4
21.18	0.834	66.54	2.62	X
21.24	0.836	66.73	2.63	X 1/4
21.3	0.839	66.92	2.64	X 1/2
21.49	0.846	67.51	2.66	Y
21.69	0.854	68.14	2.68	Y 1/2
21.89	0.862	68.77	2.71	Z
22.1	0.87	69.43	2.73	Z +1/2
22.33	0.879	70.15	2.76	Z+1
22.6	0.89	71	2.8	Z+1.5
22.69	0.893	71.28	2.81	Z+2
22.92	0.902	72	2.83	Z+2.5
23.06	0.908	72.45	2.85	Z+3
23.24	0.915	73.01	2.87	Z+3.5
23.47	0.924	73.73	2.9	Z+4
23.55	0.927	73.98	2.91	Z+4.5
23.87	0.94	74.99	2.95	Z+5
24.27	0.956	76.25	3	Z+6