AgAu Jewellery has dated this piece to the 1930s.

Metal: Pendant is 9ct yellow gold. The chain is 18" 9ct yellow gold, marked 375.
Stones: 1 amethyst (3ct)
Size: Pendant size 1.8cm long/ 1.3cm wide. Chain size 46cm/ 18"
Hallmarks: Both chain and pendant are marked 9ct.
Weight: 2.04g
Condition: This item is presented in very good 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