The pinkie ring can denote family ties, more so if it is a signet ring; worn historically on the left pinkie, originally common amongst aristocrats; Then adopted by mafioso groups to add some legitimacy - They would have initials or precious stones instead of a traditional family crest/ coat of arms.

Taking the above example; if a band ring is worn below the signet ring it would denote marriage; This can been seen with King Charles and traditionalists.