Gatsby Jewellery Ltd has dated this piece to the 1950s.
The diamonds are set within in a white gold coronet cluster, leading to a slim 18k yellow gold shank.

Accompanied by an independent jewellery report from IGR (#30308995).
Cut – Oval cut sapphire and old mine cut diamonds.
Colour – The diamonds are G to J.
Clarity – The sapphire is clean to the naked eye. The diamonds are SI1 to SI2, and also clean to the naked eye.

Carat – The sapphire is approximately 1.70 with a total approximate diamond weight of 1.00 carat.
Circa – 1950.
Size – P 1/2 (UK) or 7.75 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The head of the ring is 13.8 x 10.5mm and sits 6.2mm from the finger.
Metal – 18k white and yellow gold. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1950s.
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