Gatsby Jewellery Ltd has dated this piece to the 1940s.
The sapphire is flanked by a pair of old European cut diamonds in box-settings, within an ornately pierced and milgrained gallery, to a flat white gold shank.

Accompanied by a report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating, and is Sri Lankan (Ceylon) in origin.
Cut – Cushion cut sapphire in the centre and old European cut diamonds either side.

Colour – The diamonds are I to J.
Clarity – The sapphire is eye clean. The diamonds are SI2.
Carat – The sapphire is approximately 2.60 carat. The total approximate diamond weight is 0.40 carat.
Circa – 1940.

Size – L 1/2 (UK) or 5 7/8 (US). Complimentary sizing is available, can go up or down.
Measurements – The sapphire is approximately 8.3 x 6.6mm. The ring is 11.2mm at the widest point and sits 6.6mm from the finger.
Metal – 18k white gold. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/835439655
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