AgAu Jewellery has dated this piece to the 1930s.

Metal: 18ct yellow Gold band with white gold setting
Stones: 1 x ruby (0.10ct) 4 x emerald (5 points) each, totaling (0.20ct) 21 x Diamonds, totaling (1.00ct)
Stone Weight: Diamond 1.00ct
Hallmarks: Marked 18ct gold, London hallmarks
Ring Measurements: 1.8cm wide x 1.4cm high
Ring Size: UK Ring size M 1/2
Weight: 3.1g
Condition: Excellent Condition
AgAu Jewellery has dated this piece to the 1930s.
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