In the Catholic tradition, the engagement ring is usually worn on the left hand—specifically, on the left ring finger. This practice is based on the belief that the ring finger of the left hand is connected to the “vena amoris,” or “vein of love”—a vein that, according to ancient belief, leads directly to the heart. Although there is no scientific evidence to support this belief, the tradition has persisted throughout history.
The history of this custom dates back to the Roman Empire, when the bride and groom wore the ring on the left hand due to the aforementioned connection to the heart. Over time, this tradition spread to the Catholic Church as well. In the Middle Ages, the ring became a symbol of love and fidelity and was worn on the left hand in many European countries.

Although the engagement ring is worn on the right hand in some cultures today, the custom of wearing the ring on the left hand has persisted in the Catholic tradition, particularly in many Western countries. After the wedding, many couples place the wedding ring on the same ring finger, usually beneath the engagement ring.
Thus, wearing an engagement ring on the left hand has a deeply rooted history, based on symbolism and beliefs associated with love and fidelity.
And which hand does the wedding ring go on? Also on the left hand.

