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 1920s.
Fourteen (seven each side) further rose cut diamonds are set in the platinum shoulders, leading to a slender, rose gold shank.

Accompanied by an independent jewellery report from IGR (#30307792).
Cut – Rose cut.
Colour – The two main stones are F and G respectively. The smaller diamonds are G to I.
Clarity – The two main stones are VS2 and SI2 respectively. The smaller diamonds range from VS1 to SI2.

Carat – The two main stones are 0.91 carat and 0.87 carat respectively, with a further approximate 0.20 carat in the shoulders.
Circa – 1920.
Measurements – Each of the mains stones is approximately 6.7mm. The ring is 14.4mm at the widest point and sits 6.7mm from the finger.

Size – L (UK) or 5.5 (US). Complimentary sizing is available, can go up or down. The internal sizing spring will be removed should you need this to be altered.
Metal – 18k rose gold and platinum. Tested.
https://www.gatsbyjewellery.co.uk/product/art-deco-1-78-carat-rose-cut-diamond-crossover-ring-circa-1920/
Gatsby Jewellery Ltd has dated this piece to the 1920s.
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