Gatsby Jewellery Ltd has dated this piece to the 1940s.

Accompanied by a diamond grading report from EGL (#1960003322).
Cut – Old European cut (with eight-cuts in the shoulders).
Colour – J (H to I in the shoulders).
Clarity – SI2 (VS2 to SI1 in the shoulders).

Carat – 2.71 (with an additional approximate 0.06 carat in the shoulders.)
Circa – 1940.
Size –M (UK) or 6 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The diamond is 9.05 x 9.05mm. Sits 5.3mm from the finger.
Metal – Platinum. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/399899212
Gatsby Jewellery Ltd has dated this piece to the 1940s.
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