Before medical science discovered how the circulatory system functioned, people believed that a vein of blood ran directly from the fourth finger on the left hand to the heart. (This belief allegedly dates to the 3rd century BC in Greece.) Because of the hand-heart connection, people named the putative vein descriptively vena amori, Latin for 'the vein of love'. Due to this tradition, it became accepted to wear the wedding ring on this finger. By wearing rings on the fourth finger of their left hands, a married couple symbolically declares their eternal love for each other. This has now become a matter of tradition and etiquette.
In most Western cultures, the wedding ring is worn on the left hand. In some countries, however, such as Germany, Norway, and Chile, it is worn on the right hand. Orthodox Christians, Eastern Europeans and Jews also traditionally wear the wedding band on the right hand.
Etiquette frowns severely on the making of sexual overtures to a man or woman wearing a wedding ring
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