The circular shape represents the never-ending nature of eternity.
In Switzerland, the wedding ring is worn on the left hand.
It is said that the "love vein" in the ring finger has direct access to the heart and will allow romance to flourish in the marriage.
The Swiss don‘t have a tradition of hen parties, so there‘s less danger of everything getting smashed to pieces in the Alpine region.
Each region, in fact almost every valley, has long passed on traditions from one generation to the next.