AgAu Jewellery has dated this piece to the 1910s.

Metal: 18ct yellow gold.
Stone(s): 3 x rubies totalling (0.80ct), 4 x diamonds, totalling (0.04ct)
Measurements: Ring face 18mm x 8mm
Hallmark: Marked for 18ct, C.1914
Size. UK Size T
Weight: 2.5g
Condition: Very good condition
AgAu Jewellery has dated this piece to the 1910s.
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