AgAu Jewellery has dated this piece to the 1960s.

Metal: Pendant is 9ct gold. The chain is 17"/43cm 9ct gold,
Stones: 1 x Tanzanite (0.25ct), 12 x diamonds (2 points) = (0.25ct)
Size: Pendant size 1.5cm long / 0.6cm wide. Chain size 17"/43cm
Hallmarks: Pendant 9ct / Chain marked 9ct
Weight: 1.9g
Condition: This item is presented in very good condition.
AgAu Jewellery has dated this piece to the 1960s.
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