Jan Logan offers complimentary shipping and a 14 days change of mind policy on all orders worldwide.
All pearls and semi precious gemstones are selected specifically for Jan Logan designs
Our coloured gemstones are natural so there can be a slight variance in colour.
CIRCUM (MM) |
DIAM (MM) |
AUS, UK EUR |
USA | ASIA | SWISS |
---|---|---|---|---|---|
44.2 | 14.1 | F | 3 | 4 | 4 |
44.8 | 14.3 | F½ | 5 | 5¼ | |
45.5 | 14.5 | G | 3½ | ||
46.1 | 14.7 | G½ | 6 | 6½ | |
46.8 | 14.9 | H | 4 | 7 | |
47.4 | 15.1 | H½ | ¾ | ||
48.0 | 15.3 | I | 4½ | 8 | |
48.7 | 15.5 | J | 9 | ||
49.3 | 15.7 | J½ | 5 | 9 | |
50.0 | 15.9 | K | 10 | ||
50.6 | 16.1 | K½ | 5½ | 10 | |
51.2 | 16.3 | L | 11¾ | ||
51.9 | 16.5 | L½ | 6 | 11 | 12¾ |
52.5 | 16.7 | M | 12 | ||
53.1 | 16.9 | M½ | 6½ | 13 | 14 |
53.8 | 17.1 | N | |||
54.4 | 17.3 | N½ | 7 | 14 | 15½ |
55.1 | 17.5 | O | |||
55.7 | 17.7 | O½ | 7½ | 15 | 16½ |
56.3 | 17.9 | P | |||
57.0 | 18.1 | P½ | 8 | 16 | 17¾ |
57.6 | 18.3 | Q | |||
58.3 | 18.5 | Q½ | 8½ | 17 | |
58.9 | 18.8 | R | 19 | ||
59.5 | 19.0 | R½ | 9 | 18 | |
60.2 | 19.2 | S | 20¼ | ||
60.8 | 19.4 | S½ | 9½ | 19 | |
61.4 | 19.6 | T | 21½ | ||
62.1 | 19.8 | T½ | 10 | 20 | |
62.7 | 20.0 | U | 21 | ||
63.4 | 20.2 | U½ | 10½ | 22 | 22¾ |
64.0 | 20.4 | V | |||
64.6 | 20.6 | V½ | 11 | 23 | |
65.3 | 20.8 | W | 25 | ||
65.9 | 21.0 | W½ | 11½ | 24 | |
66.6 | 21.2 | X | |||
67.2 | 21.4 | X½ | 12 | 25 | 27½ |
67.8 | 21.6 | Y | |||
68.5 | 21.8 | Z | 12½ | 26 | 28¾ |
69.1 | 22.0 | Z½ | |||
69.7 | 22.2 | Z+1 | 13 | 27 | |
70.4 | 22.4 | ||||
71.0 | 22.6 | 13 |
Print the ring size guide and follow instructions to find out what size your existing ring is: