Gatsby Jewellery Ltd has dated this piece to the 1930s.
The stone is secured in by four split claws at the compass points, with striking detailing in the gallery and under the shoulders. Six (three each side) eight-cut diamonds are set in the shoulders and lead to a slim, platinum shank.

Accompanied by a diamond grading report from HRD Antwerp (#210000182367).
Cut – Old European cut in the centre with eight-cuts in the shoulders.
Colour – H (the diamonds in the shoulders are F to G).
Clarity – VS1 (VS1 to VS2 in the shoulders).

Carat – 0.76 in the centre (with a further approximate 0.12 carat in the shoulders).
Circa – 1930.
Size – N (UK) or 6.5 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The diamond is 6.04 x 6.07mm and sits 5.2mm from the finger.
Metal – Stamped PLAT – indicting platinum – and tests as such.
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