Conversation so far:
why do you wear a ring on your right ring finger
Usually right-hand rings are rings that people have bought for themselves, not to be confused with an engagement ring or wedding band on the left.
do some men wear wedding bands on the right
Most American men will wear their wedding band on their left ring finger, but a man married in an Eastern Orthodox church could end up using the right hand instead
what do rings on the pinky finger mean
The Little Pinky Finger is often the first choice for a man who wants to wear a “statement” ring.
do people wear rings on the middle finger
Rings worn on the middle finger are surprisingly uncommon because it's adjacent to the index finger, and anything bulky can be quite a hindrance to fine manual tasks.

Question: what is the history with the index finger
Self-contained rewrite: what is the history of wearing rings on the index finger