Gatsby Jewellery Ltd has dated this piece to the 1890s.
The head of the ring sit between bold, trumpeting shoulders which conform to a slim D-shaped shank. Currently UK size M or US size 6 (complimentary sizing available).

Accompanied by a sapphire report from The Gem & Pearl Laboratory stating the sapphire shows no evidence of heating, and is Sri Lankan (Ceylon) in origin.
Cut – Oval cut sapphire and old mine cut diamonds.

Colour – The diamonds are F to G.
Clarity – The sapphire has inclusion which are visible with a loupe. The diamonds range from VS2 to SI2.
Carat –The sapphire is a known 0.63 carat, with a total approximate diamond weight of 0.90 carat.

Circa – 1890.
Measurements – The sapphire is 5.9 x 4.4mm. The head of the ring is 11.6 x 10.3mm and sits 6.2mm from the finger.
Size – M (UK) or 6 (US). Complimentary sizing is available, can go up or down.
Weight – 2.61 grams.
Metal – 12k rose gold. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1890s.
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