Ancient intaglio ca 20 B.C. of King Juba II. Married the daughter of Cleopatra and Mark Anthony. The portrait is of / possible / the young king. Born 52 B.C. dies 23 A.D.
The portrait is a good likenes but it could also be the “portrait” of the young Hercules.
The gold ring is ca 1860
Measurements of bezel : 12 x 11 mm