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.

Cut - Central diamond is a transitional cut. The surrounding stones are single cuts.
Colour - F; colourless.
Clarity - VS
Circa - 1940.
Size - P (UK) or 7.5 (US). Complementary sizing is available, can go up or down.
Measurements - The cluster is 10.4mm by 10.8mm and sits 3.7mm from the finger.
Metal - The band is 18k white gold; the diamonds are set in platinum. Tested.
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