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In some countries, the wedding ring is worn on the left hand. This choice of finger relates to traditions purportedly dating to classical times, from an early usage reportedly referring to the fourth finger of the left hand as containing the vena amoris or "vein of love".This developed from the Roman "annulus pronubis" when the man gave a ring to the woman at the betrothal ceremony. According to tradition in some countries (derived from Roman belief), the wedding ring is worn on the left ring finger because the vein in the left ring finger, referred to as the vena amoris was believed to be directly connected to the heart, a symbol of love.Blessing the wedding ring and putting it on the bride's finger dates from the 11th century. In medieval Europe, the Christian wedding ceremony placed the ring in sequence on the index, middle, and ring fingers of the left hand, representing the trinity — God the Father, God the Son, and God the Holy Spirit respectively. The ring was then left on the ring finger. In a few European countries, the ring is worn on the left hand prior to marriage, then transferred to the right during the ceremony. For example, a Greek Orthodox bride wears the ring on the left hand prior to the ceremony, then moves it to the right hand after the wedding. In England, the 1549 Prayer Book declared "the ring shall be placed on the left hand". By the 17th and 18th centuries the ring could be found on any finger after the ceremony - even on the thumb. At least in part due to this tradition, it became the norm 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 these countries. An alternative explanation could be that because the majority of people are right-handed, wearing the ring on the left hand makes it less likely to be damaged or lost during everyday activities.

In other countries such as Colombia, Germany, Greece, Mexico, Norway, Peru, Poland, Russia, Spain, Ukraine, and Venezuela, however, it is worn on the right hand. Orthodox Christians and Eastern Europeans (except for the Romanians) also traditionally wear the wedding band on the right hand. Jewish women wear the wedding ring on the left hand, even though it is placed on the right hand during the marriage ceremony. Men do not traditionally wear rings at all although in some of the "Modernist" movements it has begun to gain currency. In The Netherlands, Catholics wear it on the left, Protestants on the right and all others on the left; in Austria, Catholics wear it on the right. In Belgium, the choice of hand depends on the region of the country. Greek people, many being Orthodox Christians, also wear the wedding rings on the right hand in keeping with Greek tradition. A traditional reason to wear the wedding ring on the right hand stems from Roman custom. The Latin word for left is "sinister", which in addition to this sense also has the same senses as the English word. The Latin word for right is "dexter", a word that evolved into "dexterity". Hence, the left hand had a negative connotation and the right a good one.

Traditionally, in some parts of India among those practicing Hinduism, a toe ring or bichiya is worn instead of a ring on a finger, although this is only for women, and increasingly worn along with a finger ring. In the eastern parts of India, primarily West Bengal, an iron bangle, or 'loha' is worn by women. Increasingly, this bangle is given a gold or silver coating to improve its appearance.

Eternity rings are presented to the wife by the husband on the first anniversary or at the birth of the first child, whichever of the two comes first. This is generally a diamond ring of similar or greater value than the engagement ring.

In Romania spouses celebrate their silver wedding anniversary (25 years of marriage) by exchanging silver wedding rings, which are worn on the 4th finger of the left hand along with the original (usually gold) wedding ring.