It was listed by Gatsby Jewellery Ltd. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Gatsby Jewellery Ltd has dated this piece to the 1910s.
The stone is secured in a six claw open collet with fine, platinum detailing in the gallery. Four (two each side) eight cut diamonds are set in the shoulders, leading to a slim, D-shaped shank.

Accompanied by a diamond grading report from HRD Antwerp (#190000156858).
Cut – Old mine cut with eight cuts in the shoulders.
Colour – G (G to H in the shoulders).
Clarity – SI1 (VS2 to SI1 in the shoulders).

Carat – 1.55 (with a further approximate 0.05 carat in the shoulders).
Circa – 1915.
Measurements – The diamond is 6.90 x 6.59mm and sits 6.75mm from the finger.
Size – M (UK) or 6 (US). Complimentary sizing is available, can go up or down.
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/411736956
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