Gatsby Jewellery Ltd has dated this piece to the 1910s.
All in 18k gold.

Accompanied by an independent jewellery report from WGI.
Cut: Old European.
Colour: F.
Clarity: SI2.
Carat: 1.00.
Circa: 1910.
Size: K 1/2 (UK) or 5 3/8 (US). Free sizing available.
Measurements:? The diamond is 6.11 x 6.34mm and sits 4.2mm from the finger.

Weight: 2.58 grams.
Metal: 18k gold. Tested with a Niton DXL Precious Metal Analyzer.
Video: To view videos of this ring recorded in daylight, please copy / paste the following link into your browser: https://gatsbyjewellery.co.uk/products/art-deco-1-00-carat-old-cut-diamond-engagement-ring-circa-1916
Item # 119913S099
Gatsby Jewellery Ltd has dated this piece to the 1910s.
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