In the US, the most generic ring size is 7, but they often need to be resized.
You would need to measure the finger for ring size.
There are a few ways to find out your girfriends ring size. You can ask her mother or take one of her rings to the jewler and let him measure it. If you buy the worng size, most places will resize the ring for free.
no they are dead......
You need to ask a question
You may need to find out your girlfriend's ring size without her knowing. You could try asking her friends or family.
If you are measuring the diameter of the ring (which one can assume given the size) then it is about a 10 1/4 ring size. A 20.2 mm is a 10.5 in the US while a 19.8 is a 10. The sizes are different by country. Refer to the ring size chart in the links below if you need the sizes for different countries.
A 14mm size ring is a US size 3.
You need to learn English before you ask questions. I have no idea what on earth you could POSSIBLY be asking.
well, if the rings going to be a surprise, it can be quite tricky. maybe find a ring that she already wears a lot, and take it to the place and ask what size that might be. if its not a surprise, just aske her what size she wear's.
just make the wedding ring bigger and preetyer than the engagement ring.
About Size: 7 US.