Gold saddle ring set with a coral.
Some Tibetan tibes believe that the middle finger is one of the nine doors of the body through which life energy can escape and through which evil spirits can enter, the men and women of Tibetan populations wear this kind of ring on their middle finger in order to keep the 'door' closed
Tibet or Nepal
Mid 20th century
“The jewelry from Nepal” Hannelor Gabriel. Traditional jewelry of India”, Untracht, Oppi, Harry N. Abrams. Inc publishers