Gatsby Jewellery Ltd has dated this piece to the 1900s.
The ornate surround features 16 old mine cut diamonds, with the four stones set at the compass points set in lotus-flower-shaped settings. On fluted 18k yellow gold shank which splits at the shoulders.

Accompanied by an independent jewellery report from IGR (#30310340).
Cut – Oval cut sapphire with rose cut and old cut diamonds.
Colour – The diamonds range from F to I.
Clarity – The sapphire is loupe clean. The diamonds are VS2 to SI1.

Carat – The sapphire is approximately 1.85 carat, with a total approximate diamond weight of 0.82 carat.
Circa – 1900
Size – L (UK) or 5.5 (US). Complimentary sizing is available, can be sized up or down.

Measurements – The sapphire is approximately 9 x 7.2mm. The head of the ring is 21.1 x 18.5mm and sits 8.3mm from the finger.
Metal – 18k yellow gold. The gems are set in silver. Tested.
Video - To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/847327470
Gatsby Jewellery Ltd has dated this piece to the 1900s.
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