Gatsby Jewellery Ltd has dated this piece to the 1960s.

Cut – Round brilliants.
Colour – G.
Clarity – VS1 to VS2.
Carat – Approximately 0.22.
Circa – 1965.
Size – N (UK) or 6.5 (US).
Measurements – 2.3mm at the widest point.
Metal – Platinum. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1960s.
Gatsby jewellery are a husband and wife team who have years of knowledge and experience in dealing in fine antique jewellery.
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