How and why jewelry appeared, why primitive people who were busy with survival needed them, you can endlessly guess. One thing is obvious - from time immemorial, jewelry, and especially rings, carry a secret meaning and symbolism.
The ring is not only a symbol of love and marital fidelity, it is a talisman and a decoy for good luck. Anyone who has knowledge of symbolism and semantics can tell a lot about a person just by looking at his hands with or without rings.
It is believed that the ring on the ring finger of the right hand is a symbol of marriage, on the finger of the left hand it is a sign of loneliness after a divorce. The rings on the index finger speak of a seeking creative nature, most likely a person is lonely and wants to find his half.
In Western Europe, the father gave a silver ring with an engraved family coat of arms to his heir, who put it on his little finger.
Rings on the little finger are also peculiar to people of art. However, back in the Middle Ages, people noticed that secretive, ambiguous people were inclined to gird the finger of Mercury (little finger). And then it was customary to wear not just rings, but rings, the stone in which also told a lot about the owner. So, warriors hungry for fame and recognition wore a ring with agate on their little finger, those who dreamed of love - with topaz or aquamarine, a diamond on their little finger is a symbol of hereditary power, a person who wants to subordinate everything to his will.
… and modernity
In the modern world, the knowledge of ancestors is almost lost, rings have lost their sacred meaning, and only a few are able to correctly interpret the presence of a ring on the little finger.
In youth culture, the ring on the little finger is worn by bright and extraordinary personalities who want to curl about themselves, not infrequently they are goths or punks. Moreover, they choose rings that are wide, with a curved edging, relief, engraving or chains that are attached to bracelets.
In a gay environment, it is customary to give a flat ring on the little finger to the "second half", and usually buy two rings, one of which is worn on a chain, and the second on the finger. Lesbian girls do the same, but it is customary to wear the ring not on the little finger, but on the thumb. This tradition has long roots. So, aristocrats, among other gifts to commoner mistresses, gave rings that bored their wife. Obviously, the wife's sleek handle had thin fingers, and the rings for commoners were put on only the little finger, hence the symbolism of forbidden and fickle love.
A ball-ring on the little finger is a sign of belonging in some societies, for example, in Ireland, such rings were given to boys upon initiation into the knights of the Order, and only to those who passed initiation. Today, this tradition is borrowed by accultists and followers of mystical teachings who do not disdain images of skulls or other signs on ball rings.