The fourth digit on the hand is known as the ring finger. This may come from earlier notions that this finger is directly connected to the heart via an artery, and some believed that wearing a ring of gold on this finger would cure ailments. Others believed that pinching, stabbing, or even bloodletting from this finger would cure ailments, hence its other, earlier, name, the leech finger.
Meaning of Each Finger for Wearing Rings
The Ring Finger: History of Wearing Wedding Rings on the Fourth
Why do we put rings on the ring finger?
Why is our fourth finger the “ring finger”?
Which Hand for Engagement Rings Wedding & Eternity Rings?
Why Do We Wear Engagement and Wedding Rings on Our Left Hands
Ring Meanings: Ring Finger Meanings Explained
Why is the ring finger called the digitus medicus? – the CAMPVS
The meaning of the rings on the fingers Flamme en rose
Why Are Engagement Rings Worn on the Left Hand? – Noe's Jewelry