AgAu Jewellery has dated this piece to the 1850s.

Metal: 18ct yellow & white gold
Stone(s): 24 x diamonds, totalling (0.85ct), 1 x ruby (0.50ct)
Measurements: Ring face 26mm x 10mm
Hallmark: Marked for 18ct gold C1850’s
Size. Size O1/2
Weight: 4.2g
Condition: Very good condition
AgAu Jewellery has dated this piece to the 1850s.
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