Gatsby Jewellery Ltd has dated this piece to the 1930s.

Accompanied by an independent jewellery report from IGR (#30309165).
Cut – Cabochon cut ruby with old cut diamonds.
Colour – The diamonds are F to G.
Clarity – The diamonds are SI1 to I1; all are clean to the naked eye.

Carat – The ruby is approximately 2.74 carat with an approximate diamond weight of 1.03 carat.
Circa – 1930.
Measurements – The head of the ring is 14.6 x 13.1mm and sits 7.75mm from the finger.
Size – L 1/2 (UK) or 5 7/8 (US). Complimentary sizing is available, can go up or down.
Metal – The head of the ring is platinum, on a 18k white gold shank. 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