Y the Wedding Ring is worn on the 4th finger?

Amazing and try it for yourself! Or is that there is a vein called Vena amoris whose Latin name means, literally, "vein of love" which ran directly from the heart to the 4th fingers. This theory has been cited in western cultures as one of the reasons the engagement ring and/or wedding ring was placed on the fourth finger, or "ring finger".
This is another tradition that the Christians picked up from the Romans.