Gatsby Jewellery Ltd has dated this piece to the 1900s.

Accompanied by an independent jewellery report by IGR (#30310224).
Cut – Old mine cut.
Colour – G.
Clarity – SI1.
Carat – Approximately 1.07 carat.
Circa – 1900.
Size – V (UK) or 10 5/8 (US). Complimentary sizing is available, can be sized up or down.
Measurements – The diamond is approximately 6.7 x 5.5mm and sits 3.8mm from the finger.
Weight – 5 grams
Metal – 18k yellow gold. Tested.
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