AgAu Jewellery has dated this piece to the 1930s.

Metal: 9ct yellow gold.
Hallmarks: Marked for 9ct gold on the pendant. Chain fully marked for 9ct gold
Stone(s): 6 x blue topaz (0.25ct) each, totalling (1.50ct)
Measurements: Pendant 28mm x 13mm, chain 18"/45cm,
Weight: 1.9g
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