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 1930s.

Accompanied by an independent jewellery report from IGR (#30307847).
Cut – Cushion cut sapphire and old mine cut diamonds.
Colour – The diamonds are E to F.
Clarity – The sapphire is VVS. The diamonds are SI1 and SI2.

Carat – The sapphire is approximately 1.50 carat, with approximately 0.13 carat of diamonds.
Circa – 1935.
Measurements – From the edge of one outer diamond to the other is 13.3mm. The ring is 8.4mm at the widest point and sits 3.8mm from the finger.

Size – N (UK) or 6.5 (US). Complimentary sizing is available, can go up or down.
Metal – 18k yellow gold. Tested.
https://www.gatsbyjewellery.co.uk/product/art-deco-1-50-carat-sapphire-old-cut-diamond-trilogy-ring-circa-1935/
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