About ring dimensions
Perradione's RING is compatible with JIS standards 9-21.
Ring size table (unit: mm)
| Size symbol | Ring diameter | Inner circumference of the ring |
| 9 | 15.7 | 49.2 |
| 11 | 16.4 | 51.3 |
| 13 | 17.0 | 53.4 |
| 15 | 17.7 | 55.5 |
| 17 | 18.4 | 57.6 |
| 19 | 19.0 | 59.7 |
| 21 | 19.7 | 61.8 |
* If the size you are looking for is not available above, we can also make to order. Please request from the inquiry form.
* The size is a guide. Please note that due to individual differences, some errors may occur individually.
About necklace dimensions
Please refer to it when choosing a necklace. For details, please check the size notation on the product details page.
| Choker type approx. 36 cm (14 inches) | |||||||
The standard length is about 36 cm (14 inches), and lengths less than about 40 cm (16 inches) are also commonly called chokers. A necklace with a length along the base of the neck ![]() |
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| Princess type approx. 41 cm (16 inches) to 50 cm | |||||||
The most basic length, about 41 cm (16 inches) to 50 cm necklace ![]() |
| Matinee type approx. 53 cm (21 inches) -60 cm | |||||||
A necklace originally made of pearl with a standard size of about 53 cm (21 inches) to 60 cm in total length. ![]() |
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| Opera type approx. 71 cm (28 inches) -80 cm | |||||||
A pearl necklace that is usually about 71 cm (28 inches) to 80 cm. ![]() |
| Rope type approx. 107 cm (42 inches) or more | |||||||
A necklace of about 107 cm (42 inches) or more ![]() |

About bracelet dimensions

Earrings and earrings dimensions





