Gatsby Jewellery Ltd has dated this piece to the 1930s.
The stone is secured in a six claw coronet setting on a slim and tapering 18k yellow gold shank.

Accompanied by a De Beers Institute of Diamonds grading report. A unique number has been inscribed on this diamond providing utmost security.
Cut:? Old European cut.
Colour:? J.
Clarity:? VS2.
Carat:? 0.65.

Circa:? 1930.
Size:? N (UK) or 6.5 (US). Free sizing available.
Measurements:? The diamond is 5.73 x 5.59mm. Sits 6mm from the finger.
Weight:? 2.43 grams.
Metal:? 18k yellow gold. Tested with a Niton DXL Precious Metal Analyzer.
Item # 511113S248
Gatsby Jewellery Ltd has dated this piece to the 1930s.
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