Ring Size Guide
It would be very helpful once you know your and her ring size.
Here are some tips on measuring your ring size:
1. If you can have a jeweler help you to physically try on a ring sizer, it's the most accurate way to find out
2. You should be at your normal body temperature to have your finger sized. This means you should not have this done when you just finished activities such as working out, or running because these activities will have your finger swollen.