Gatsby Jewellery Ltd has dated this piece to the 1920s.
The stone is secured in a four claw collet with neat geometrical detailing in the gallery. The spear shaped shoulders are set with six (three each side) eight-cut diamonds, leading to a slender platinum shank.

Accompanied by an independent jewellery report from IGR (#30309905).
Cut – Old mine cut in the centre and eight-cuts in the shoulders.
Colour – L in the centre. The diamonds in the shoulders are F to G.

Clarity – SI1 in the centre (VS2 to SI1 in the shoulders).
Carat – The centre is a known 1.22 carat, with a further approximate 0.05 carat in the shoulders.
Circa – 1920.
Size – M 1/2 (UK) or 6.25 (US). Complimentary sizing is available, can go up or down.

Measurements – The centre stone is 6.4 x 6mm and sits 6.1mm from the finger.
Metal – Platinum. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/710823523
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