Gatsby Jewellery Ltd has dated this piece to the 1910s.
On a slim, platinum shank.

Accompanied by an independent jewellery report from IGR (#30310575).
Cut – Rose cut.
Colour – F.
Clarity – VVS2.
Carat – Approximately 1.00.
Circa – 1910.
Size – M (UK) or 6 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The diamond is approximately 7mm in diameter. The ring is 7.8mm at the widest point and sits 5.7mm from the finger.
Weight – 3.8 grams.
Metal – Platinum. Tested.
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