Gatsby Jewellery Ltd has dated this piece to the 1920s.
The ring sits nice and snug to the finger on a slim and tapering 18k yellow gold shank.

Accompanied by an independent jewellery report from IGR.
Cut:? Round cut aquamarine and old mine cut diamonds.
Colour:? The diamonds range from F to H.
Clarity:? The aquamarine is eye-clean. The diamonds range from VS2 to SI2; all are clean to the naked eye.

Carat:? The aquamarine is approximately 0.84 carat, with approximately 0.48 carat of diamonds.
Circa:? 1925.
Size:? P 1/2 (UK) or 7.75 (US). Free sizing available.
Measurements:? The aquamarine is approximately 6.3mm in diameter. The head of the ring is approximately 12.1mm is diameter and sits 5.6mm from the finger.
Weight:? 3.06 grams.
Metal:? 18k yellow gold and platinum. Tested with a Niton DXL Precious Metal Analyzer.
Item # 6121112S085
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