Gatsby Jewellery Ltd has dated this piece to the 1930s.
The stone is secured in a eight-claw platinum collet which sits between marquise shaped shoulders to a slim D-shaped platinum shank.

Accompanied by a GIA Natural Diamond Report (1216865765).
Cut – Old European cut.
Colour – M.
Clarity – VS2.
Carat – 0.73.
Circa – 1935.
Measurements – The diamond is 5.52 x 5.56mm. Sits 6.3mm from the finger.
Size – N (UK) or 6.5 (US). Complimentary sizing is available, can go up or down.
Metal – Platinum. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1930s.
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