Inspired by engagement/wedding rings which were popular in 16th -19th century in Europe. Such as Gimmel ring, Fede ring and Claddagh ring.
Gimmel Ring is a ring with two or three hoops or links that fit together to form one complete ring. The name gimmal comes from Latin gemellus, twin, via Old French
The Claddagh ring belongs to a group of European finger rings called "fede rings" The name "fede" derives from the Italian phrase mani in fede ("hands [joined] in faith" or "hands [joined] in loyalty"). These rings date from Roman times, when the gesture of clasped hands was a symbol of pledging vows, and they were used as engagement / wedding rings in medieval and Renaissance Europe.
Fede rings are distinctive in that the bezel is cut or cast to form two clasped hands that symbolise faith and trust or "plighted troth" . The Claddagh ring is a variation on the fede ring, while the hands, heart, and crown motif was used in England in the early 18th century.