Gatsby Jewellery Ltd has dated this piece to the 1920s.

Cut – The three central diamonds are old European cuts, with rose cut diamonds in the surround.
Colour – H to I.
Clarity – VS1 to VS2
Carat – The centre stone is approximately 0.15 carat, with two 0.04 carat (approx.) diamonds above and below. The total approximate weight of the rose cuts is 0.04 carat.

Circa – 1955.
Size – J 1/2 (UK) or 5 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The ring is 10.6mm at the widest point and sits 4.5mm from the finger.
Metal – 18k white gold. The head of the ring is in platinum. French hallmarks.
com/835439964
Gatsby Jewellery Ltd has dated this piece to the 1920s.
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