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

Cut – Round brilliant cuts.
Colour – G to H.
Clarity – VS2 to SI1.
Carat – The centre is approximately 0.10, with a total approximate weight of 0.20 carat
Circa – 1960.
Size – O (UK) or 7 (US). Complimentary sizing is available, can be sized up or down.

Measurements – From the outer edge of one outer diamond to the other is 10.5mm. The ring is 3.7mm at the widest point and sits 4.7mm from the finger.
Metal – Stamped PLAT 18CT indicating platinum and 18k yellow gold, and tests as such.
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.
You can view the stock and full dealer information on the Gatsby Jewellery Ltd Profile Page