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Our team of experts is available to answer all your questions from assistance with your orders to style advice and gift ideas.
You may be able to find your ring size by measuring a ring you own that is a comfortable fit. If not, our guide below is on hand to take the guesswork out of ring shopping.
Alternatively, our jewellery experts are here to help. Speak with an expert or pop into one of our stores and we'll measure you on the spot.
Contact us| UK | US | EU | ⌀ Inside Diameter |
|---|---|---|---|
| F | 3 | 44 | ⌀ 14.0 mm |
| G | 3.5 | 45 | ⌀ 14.5 mm |
| H | 4 | 46.5 | ⌀ 15.0 mm |
| I | 4.5 | 48 | ⌀ 15.3 mm |
| J | 5 | 49.5 | ⌀ 15.6 mm |
| K | 5.5 | 50.5 | ⌀ 16.2 mm |
| L | 6 | 52 | ⌀ 16.6 mm |
| M | 6.5 | 53 | ⌀ 16.9 mm |
| N | 7 | 54.5 | ⌀ 17.2 mm |
| O | 7.5 | 55.5 | ⌀ 17.8 mm |
| P | 8 | 57 | ⌀ 18.1 mm |
| Q | 8.5 | 58 | ⌀ 18.5 mm |
| R | 9 | 59.5 | ⌀ 19.1 mm |
| S | 9.5 | 61 | ⌀ 19.4 mm |
| T | 10 | 62 | ⌀ 19.7 mm |
| U | 10.5 | 63.5 | ⌀ 20.4 mm |
| V | 11 | 64.5 | ⌀ 20.7 mm |
| W | 11.5 | 66 | ⌀ 21.0 mm |
| X | 12 | 67 | ⌀ 21.6 mm |
| Y | 12.5 | 68.5 | ⌀ 22.0 mm |
| Z | 13 | 69.5 | ⌀ 22.3 mm |
All deliveries are free of charge and our expert courier service will ensure your jewellery reaches you as quickly as possible.
If you are unhappy with your Jessica McCormack online purchase, we will be happy to arrange an exchange or full refund within 14 days.
The Hands-on Method
Measure an Existing Ring
A Three Stone Diamond Button Back ring with one 5.33ct octagonal step cut diamond & two trapeze cut diamonds, set in a Georgian style cut down setting in 18k white gold & yellow gold.
A Three Stone Diamond Button Back ring with one 5.33ct octagonal step cut diamond & two trapeze cut diamonds, set in a Georgian style cut down setting in 18k white gold & yellow gold.
