Gatsby Jewellery Ltd has dated this piece to the 1920s.
The stone is surrounded by 18 old cut diamonds in milgrained platinum rubover settings above a finely pierced gallery, leading to a slim platinum shank. A ring of the highest possible quality.

Accompanied by a sapphire report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating, and is Sri Lankan (Ceylon) in origin.
Cut – Oval cut sapphire with old cut diamonds.

Colour – The diamonds are F to G.
Clarity – The sapphire is loupe clean. The diamonds are VS1 to SI1.
Carat – The sapphire is a known 4.06 carat. The total approximate diamond weight is 0.54 carat.
Circa – 1925.

Size – N 1/2 (UK) or 6.75 (US). Complimentary sizing is available, can go up or down.
Measurements – The sapphire is 11.8 x 8.5mm. The ring is 16.8 x 14.1mm and sits 7mm from the finger.
Metal – Platinum. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/855297977
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