AgAu Jewellery has dated this piece to the Victorian era.

Metal: 18ct yellow gold.
Stone(s): 1 sapphire (1.00ct), 12 Diamonds (0.60ct)
Ring Measurements: Ring Face. 1.3cm x 1.3cm
Hallmark: Hallmarked for 18ct Gold
Size: UK size M
Weight: 3.5g
Condition: Very good condition
AgAu Jewellery has dated this piece to the Victorian era.
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