Corvidae Antique has dated this piece to the Edwardian era.
It would make a beautiful engagement ring as it would sit nicely against a narrow wedding ring.

SIZE: M and a half (UK), approximately 6.5 (US). The gem-set front section is 1.8cm wide and the shank is approximately 2mm wide.
WEIGHT: 1.0g.
MATERIALS: Gold, silver, ruby, diamond.
HALLMARKS/STAMPS: None. The gold tests as minimum 14 carat.
CONDITION: In excellent antique condition.
ERA: Edwardian (c.1901-1914).
Corvidae Antique has dated this piece to the Edwardian era.
Hand picked jewellery from a friendly family business
You can view the stock and full dealer information on the Corvidae Antique Profile Page