Oh, that's good to hear. I'm afraid that my ring size changes in the future, and I wouldn't want to spend so much money on a ring I may not fit in forever.
Is it really true that they can adjust the ring a bit, i.e. push the butterflies a bit more apart?
Also, my fingers (size 5) are quite short (ring finger around 2.75 inches; or around 7 cm).
Do you think the ring will look overwhelming on me due to its size?
No- I think you could wear it- I have short fingers,too. My ring finger measures the same as yours.