Gatsby Jewellery Ltd has dated this piece to the 1920s.
Four (two each side) eight-cut diamonds are set in the shoulders in heart-shaped collets leading to a slim knife-edge band.

Accompanied by an independent jewellery report from IGR (#30308933).
Cut – Old mine with eight-cut diamonds the shoulders.
Colour – J (with F to G in the shoulders).
Clarity – VVS2. (with VVS1 to VVS2 in the shoulders.)

Carat – 0.90 in the centre, with an additional estimated 0.07 carat in the shoulders.
Circa – 1925.
Size – K 1/2 (UK) or 5 3/8 (US). Complimentary sizing is available, can go up or down.
Measurements – The centre stone is approximately 5.7mm in diameter and sits 6.1mm from the finger
Metal – Platinum (and 10% iridium). Stamped.
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.
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