What size ring should I buy as a surprise gift?

If you're buying a ring as a surprise gift, the safest approach is to use a ring your recipient already wears as a reference. If possible, borrow a ring they wear on the same finger and compare it to a ring size chart or have it measured by a jeweller.

If that's not an option, average sizes can provide a useful starting point. In the UK, the average women's ring size is M, while the average men's ring size is S.

You could also ask a close friend or family member if they know the person's ring size, or try comparing their finger size to your own. When in doubt, it's usually better to choose a slightly larger size, as a loose ring is often easier to adjust than one that's too tight.

For the best chance of getting it right, gather as much information as possible before making your purchase.