Ring Size Guide
Every Nayiri ring is made to order in our Yerevan workshop, so getting the size right matters. Use any of the three methods below — and if you're between sizes or unsure, contact us or message us on WhatsApp and we'll help you decide. We use EU sizing (the inner circumference of the ring in millimetres).
Method 1 — Measure a ring you already own
Take a ring that fits the intended finger well. Measure the inside diameter in millimetres with a ruler, then find it in the table below.
Method 2 — Measure your finger
Wrap a thin strip of paper or a piece of string snugly around the base of your finger. Mark where it overlaps, then measure the length in millimetres. That number is your EU size (e.g. 54 mm around = EU 54).
Method 3 — Ask a jeweler
Any local jeweler will measure your finger in minutes, usually free of charge. Ask for your EU (ISO) size, or note the US size and convert below.
Size chart
| EU size (circumference, mm) | Inner diameter (mm) | US size |
|---|---|---|
| 46 | 14.6 | 3¾ |
| 47 | 15.0 | 4 |
| 48 | 15.3 | 4½ |
| 49 | 15.6 | 4¾ |
| 50 | 15.9 | 5¼ |
| 51 | 16.2 | 5½ |
| 52 | 16.6 | 6 |
| 53 | 16.9 | 6¼ |
| 54 | 17.2 | 6¾ |
| 55 | 17.5 | 7¼ |
| 56 | 17.8 | 7½ |
| 57 | 18.1 | 8 |
| 58 | 18.5 | 8¼ |
| 59 | 18.8 | 8¾ |
| 60 | 19.1 | 9 |
| 61 | 19.4 | 9½ |
| 62 | 19.7 | 10 |
| 63 | 20.1 | 10¼ |
| 64 | 20.4 | 10¾ |
Tips for an accurate fit
- Measure at the end of the day, when fingers are at their largest — never when cold.
- If your knuckle is noticeably wider than the base of your finger, measure both and choose a size in between.
- Wide bands fit more snugly: consider going up half a size for bands over 6 mm.
- If you land between two sizes, choose the larger one.
Buying a ring as a surprise?
Borrow a ring they wear on the intended finger and measure its inner diameter, trace its inner circle on paper, or ask us — we regularly help with surprise engagement sizing, and our team can advise on the most common sizes if all else fails.
Need a size outside 46–64, or still unsure? Get in touch — every piece is made to order, so we can craft any size you need.