Sizing guide
If you already own a ring that fits and want a spoon ring for the same finger, measure the inner diameter of that ring with a ruler or a ring-sizer app.
If you don’t know your size, we recommend visiting any jeweller who can measure your fingers. This is the most accurate method.
Less accurate methods:
- Wrap a strip of paper/string around your finger so it can slide over the knuckle. Mark where the ends meet and measure the strip. Measure at least 3–4 times throughout the day (size can change) and average the results.
- Use a ring-sizer app — just place your finger, don’t press down. Move the blue vertical lines until they almost disappear.
Don’t forget: fingers on your dominant hand are usually larger. Measure the exact finger you plan to wear the ring on.
All rings are made to the size you enter at checkout. Getting the size right is the customer’s responsibility. Resizing is possible in the Prague studio, or by post at your own shipping cost.
| Circumference (mm) | Diameter (mm) | CZ size (≈ diameter) | EU | UK | US |
|---|---|---|---|---|---|
| 37.8 | 12.04 | 12 | 38 | A | 0.5 |
| 39.1 | 12.45 | 12.5 | 39 | B | 1 |
| 40.4 | 12.85 | 13 | 40 | C | 1.5 |
| 41.7 | 13.26 | 13.5 | 42 | D | 2 |
| 42.9 | 13.67 | 13.5 | 43 | E | 2.5 |
| 44.2 | 14.07 | 14 | 44 | F | 3 |
| 45.5 | 14.48 | 14.5 | 45 | G | 3.5 |
| 46.8 | 14.88 | 15 | 47 | H | 4 |
| 48.0 | 15.29 | 15 | 48 | I | 4.5 |
| 48.7 | 15.49 | 15.5 | 49 | J | 5 |
| 50.0 | 15.90 | 16 | 50 | K | 5.5 |
| 51.2 | 16.31 | 16 | 51 | L | 6 |
| 52.5 | 16.71 | 16.5 | 52 | M | 6.5 |
| 53.8 | 17.12 | 17 | 54 | N | 7 |
| 55.1 | 17.53 | 17.5 | 55 | O | 7.5 |
| 56.3 | 17.93 | 18 | 56 | P | 8 |
| 57.6 | 18.34 | 18.5 | 58 | Q | 8.5 |
| 58.9 | 18.75 | 18.5 | 59 | R | 9 |
| 60.2 | 19.15 | 19 | 60 | S | 9.5 |
| 61.4 | 19.56 | 19.5 | 61 | T | 10 |
| 62.7 | 19.96 | 20 | 63 | U | 10.5 |
| 64.0 | 20.37 | 20 | 64 | V | 11 |
| 65.3 | 20.78 | 20.5 | 65 | W | 11.5 |
| 66.6 | 21.18 | 21 | 67 | X | 12 |
| 67.8 | 21.59 | 21.5 | 68 | Y | 12.5 |
| 68.5 | 21.79 | 22 | 69 | Z | 13 |
Note: values are indicative (±0.2 mm). “CZ size” ≈ inner diameter in mm.