He does have a ring of hers that she wears on her index finger, and it's size 5.5 (US). He's wondering if we can from this deduce what the ring finger size is.
Now, my own fingers are big (hers are small), so my index finger is a couple of sizes larger than my ring finger. I'm expecting this is not typical, though.
I would particularly like to hear the comparative rings sizes of your index and ring fingers if you have small hands- say, ring sizes under 6 or 7.
Please help! And thanks in advance.