Orynna guide
Find your perfect fit.
We use US ring sizes, from 3 to 13 in quarter sizes. Measure at home, use the chart below — or choose “I don’t know my size” and we will help after you order.
Measure at home
Three simple ways
- Measure a ring that fitsLay a ring that fits the right finger on a ruler and measure the inside diameter in millimetres.
- Measure your fingerWrap a strip of paper around the base of your finger, mark where it meets, and measure the length.
- Match it belowFind the closest diameter or circumference in the chart. Between two sizes? Choose the larger one.
US ring size chart
Sizes and measurements
| US size | Inside diameter | Inside circumference |
|---|---|---|
| US 3 | 14.1 mm | 44.2 mm |
| US 3.5 | 14.5 mm | 45.5 mm |
| US 4 | 14.9 mm | 46.8 mm |
| US 4.5 | 15.3 mm | 48.0 mm |
| US 5 | 15.7 mm | 49.3 mm |
| US 5.5 | 16.1 mm | 50.6 mm |
| US 6 | 16.5 mm | 51.9 mm |
| US 6.5 | 16.9 mm | 53.1 mm |
| US 7 | 17.3 mm | 54.4 mm |
| US 7.5 | 17.7 mm | 55.7 mm |
| US 8 | 18.1 mm | 57.0 mm |
| US 8.5 | 18.5 mm | 58.2 mm |
| US 9 | 18.9 mm | 59.5 mm |
| US 9.5 | 19.4 mm | 60.8 mm |
| US 10 | 19.8 mm | 62.1 mm |
| US 10.5 | 20.2 mm | 63.3 mm |
| US 11 | 20.6 mm | 64.6 mm |
| US 11.5 | 21.0 mm | 65.9 mm |
| US 12 | 21.4 mm | 67.2 mm |
| US 12.5 | 21.8 mm | 68.5 mm |
| US 13 | 22.2 mm | 69.7 mm |
Inside diameter and circumference of the ring. Quarter sizes sit between the rows shown.
A few useful tips
For the most accurate fit
Measure at a normal temperatureFingers are smaller in the cold and larger at the end of a warm day.
Mind the knuckleA ring should slide over the knuckle with a little resistance and not spin freely.
Wide bands fit tighterFor a band wider than 5 mm, go up by a quarter size.
First resize freeThe first resize in the first year is free wherever the design allows it.
Still not sure?
We will help you find it.
Choose “I don’t know my size” when you order, or ask a specialist to help you measure.
Necklaces
Chain length guide
| Length | Name | Where it sits |
|---|---|---|
| 16″ | Choker | At the base of the neck |
| 17″ | Princess | Just below the collarbone |
| 18″ | Classic | On the collarbone |
| 20″ | Matinee | A little below the collarbone |
| 22″ | Opera | Above the neckline of most tops |
| 24″ | Statement | At or just above the bust |
Lengths are measured end to end, clasp included. Not sure? Choose a length on the piece and a specialist will confirm it with you.