AgAu Jewellery has dated this piece to the 1920s.

Metal: 18ct yellow gold
Stones: 1 x sapphire (1.00ct), 2 x diamonds totalling (0.10ct)
Ring Size. The face of the ring measures 12mm x 7mm
Ring Weight. 2.9g
Hallmarks: Fully marked for 18ct Gold/Plat (Slightly rubbed)
Size.UK Size N
Condition. The rings is presented in vey good condition.
AgAu Jewellery has dated this piece to the 1920s.
Agau jewellery offer an extensive range of 9ct and 18ct gold jewellery.
You can view the stock and full dealer information on the AgAu Jewellery Profile Page