What Finger Does a Promise Ring Go On?
Korean fashion trend reveals significance of wearing rings on different fingers
Promise Rings and the Meaning of Commitment Rings
Promise Ring Guide
The Meaning of a Ring on the Index Finger
How to Wear a Claddagh Ring
If you have made a promise with your platonic friend, you can wear the band on any finger-including the thumbs.
In the United States, any ring worn on the left finger is seen as a symbol of lifelong commitment showing others you are not romantically available.
It does not matter which hand you wear your engagement ring, or even your wedding ring, on.
Right Middle Finger — No Specific Symbolism, Open to Interpretation Like the thumb, wearing a ring on your right thumb has no specific meaning, or rather, the meaning is open to interpretation.