PLEASE NOTE: Many of our rings are unique and available in only one size - this is specified in the product's 'Key Features', and is the default size in the dropdown. If you chose a different size from our drop-down, you are opting to have a complementary size alteration. Product adjustments, or resizing will be made after purchase. A1Jewellers will not be liable for any differences in weight or appearance that may occur as a result of these changes. Resized or altered products are strictly non-refundable.
| Diameter | Age Range | Sizes | |
| (mm) | (Years) |
United States and Canada |
United Kingdom and Australia |
|---|---|---|---|
| 11.63 | Newborn Baby | 0 | |
| 11.84 | Newborn Baby | ¼ | |
| 12 | Baby | ½ | A |
| 12.5 | Baby-Toddler | 1 | B |
| 12.9 | Baby-Toddler | 1½ | C |
| 13.3 | 1 to 4 Years | 2 | D |
| 13.7 | 3 to 6 Years | 2½ | E |
| 14.1 | 6 to 9 Years | 3 | F |
| 14.5 | 6 to 9 Years | 3½ | F |
| 14.9 | 7 to 10 Years | 4 | H |
| 15.3 | 8 to 11 Years | 4½ | I½ |
| 15.7 | 9+ | 5 | J½ |
| 16.1 | 9+ | 5½ | K½ or L |
| 16.5 | 10+ | 6 | M |
| 16.9 | 10+ | 6½ | N |
| 17.3 | 11+ | 7 | O |
