In popular culture, Mafia members are pictured wearing pinky rings on both hands to indicate their ties to the organisation. The fact that the ring is worn on the right or left hand has no cultural significance.
Pinky rings are worn by self-made men in the American Mafia to provide something to their associates to aid with burial expenses if they are killed while on Mafia business. Pinky rings are also worn by confidence tricksters and other criminals for similar reasons. In the opinion of the general public, television dramas like The Sopranos have established the association of pinky rings with organised crime.
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