It was listed by Gatsby Jewellery Ltd. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Gatsby Jewellery Ltd has dated this piece to the 1940s.

Accompanied by an independent jewellery report.
Cut – Cushion shaped step cut emerald. The diamonds are old European cuts.
Colour – The white diamond is G, the coloured diamond is Fancy Brownish Orange.

Clarity – The orange diamond is SI2. The white diamond is VS2. The emerald has some visible inclusions (which is typical of emeralds).
Carat – The emerald is approximately 1.35 carat. The orange diamond is approximately 1.35 carat. The white diamond is approximately 1.30 carat.

Circa – 1945.
Size – L (UK) or 5.5 (US). Complimentary sizing is available. There is some limit to how much this can be altered, so please contact us regarding sizing.
Measurements – From the outer edge of one diamond to the other is 21mm. The ring is 11mm at the widest point and sits 4.6mm from the finger.
Weight – 15.5 grams.
Metal – Platinum. Tested.
com/400342414
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