Conversation so far:
when did man first start wearing wedding rings
It is commonly believed that the first examples of wedding rings were found in ancient Egypt dating to 6,000 years ago.
what are wedding rings made of
In Western nations, wedding rings are often forged of gold, palladium, platinum, argentium silver, titanium, tungsten, or more recently, silicone.

Question: which hand and finger does the ring go on
Self-contained rewrite: which hand and finger does the wedding ring go on