Gatsby Jewellery Ltd has dated this piece to the 1920s.
The diamond is secured by six double claws in a collet that sits nice and low to the finger, leading to a slim, platinum shank.

Accompanied by a diamond report from IGI.
Cut:? Old European.
Colour:? F.
Clarity:? VVS2.
Carat:? 0.91.
Circa:? 1920.
Size:? K (UK) or 5 1/8 (US). Free sizing available.
Measurements:? The diamond is 6.00 x 6.13mm and sits 5.0mm from the finger.

Weight:? 2.58 grams.
Metal:? Platinum. Tested with a Niton DXL Precious Metal Analyzer.
Video: To view videos of this ring recorded in daylight, please either contact us or copy / paste the following link into your browser: https://gatsbyjewellery.co.uk/products/art-deco-0-91-carat-old-cut-diamond-engagement-ring-circa-1925
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