AgAu Jewellery has dated this piece to the 1960s.

Metal: 18ct white gold
Stones: A central stunningly large purple amethyst (2.80ct) surrounded by 40 inner diamonds and 20 outer diamonds totalling (0.65ct).
Ring Size. The face of the ring measures 1.4cm x 1.2cm
Ring Weight. 4.2g
Hallmarks: Fullymarked for 18ct white gold
Size.UK Size O
Condition. The rings is presented in beautiful 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