Gatsby Jewellery Ltd has dated this piece to the 1920s.
The diamond is secured in a four claw platinum collet with simply “U” shaped detailing in the gallery, leading to a slim 18k yellow gold shank.

Accompanied a diamond grading report from HRD Antwerp (#190000156880).
Cut – Old mine cut.
Colour – F.
Clarity – VVS2.
Carat – 1.05.
Circa – 1920.
Measurements – The diamond is 6.08 x 5.79mm. Sits 6mm from the finger .
Size – M 1/2 (UK) or 6.25 (US). Complimentary sizing is available, can go up or down.
Metal – The diamond is set in platinum. On an 18k yellow gold shank. Tested.
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