Gatsby Jewellery Ltd has dated this piece to the 1920s.
A treasure.

Accompanied by a sapphire report from The Gem & Pearl Laboratory stating the sapphire shows no evidence of heating.
Cut:? The central sapphire is oval. The accent sapphires are calibré cut. The diamonds are eight-cuts.

Colour:? The diamonds are G to H.
Clarity:? The centre sapphire is SI. The accent sapphires are loupe-clean. The diamonds are VS2.
Carat:? The sapphire in the centre is 3.52 carat. With a further approximate 0.32 carat of sapphires in the shoulders. The total approximate diamond weight is 0.38 carat.

Circa:? 1920.
Size:? P (UK) or 7 1/2 (US). Free sizing available.
Measurements:? The sapphire is 11.5 x 8.3mm. Sits 6.5mm from the finger.
Weight:? 6.22 grams.
Metal:? Stamped '10% IRID PLAT' indicating the ring is 90% platinum and 10% iridium. Tested with a Niton DXL Precious Metal Analyzer to confirm.
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