AgAu Jewellery has dated this piece to the 1890s.

Metal: 18ct yellow gold.
Stone(s): 3 x sapphire totalling (0.75ct), 6 x diamonds, totalling (0.06ct)
Measurements: Ring face 17mm x 10mm
Hallmark: Tested for 18ct, C.1890
Size. UK Size Q
Weight: 2.8g
Condition: Very good condition
AgAu Jewellery has dated this piece to the 1890s.
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