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- Ghid Dimensiuni Bijuterii -
| Diametru(mm) | Circumferinta(mm) | Europa | USA | UK |
|---|---|---|---|---|
| 13,37 | 42 | 42 | 1.5 | A |
| 13,689 | 43 | 43 | 2 | B |
| 14,007 | 44 | 44 | 3 | F½ |
| 14,326 | 45 | 45 | G | |
| 14,644 | 46 | 46 | H | |
| 14,963 | 47 | 47 | 4 | H½ |
| 15,281 | 48 | 48 | 4½ | I½ |
| 15,6 | 49 | 49 | 5 | J½ |
| 15,918 | 50 | 50 | K | |
| 16,236 | 51 | 51 | L | |
| 16,554 | 52 | 52 | 6 | L½ |
| 16.873 | 53 | 53 | 6½ | M½ |
| 17,191 | 54 | 54 | 7 | N½ |
| 17,509 | 55 | 55 | O | |
| 17,828 | 56 | 56 | P | |
| 18,146 | 57 | 57 | 8 | P½ |
| 18,465 | 58 | 58 | 8½ | Q½ |
| 18,783 | 59 | 59 | R | |
| 19,101 | 60 | 60 | S | |
| 19,42 | 61 | 61 | 9½ | S½ |
| 19,738 | 62 | 62 | 10 | T½ |