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 1940s.
Really pretty filigree work to the side of the central "square;" the double groove to the band; the extra single cut diamonds around the main solitaire; the step-down baguette cuts: there is just so much detail here.

Cut - Transitiona cut in the centre and two baguette cuts either side and 12 single cut diamonds surrounding the central stone.
Colour - F; diamonds are colourless
Clarity - VS.
Carat - Approximately 0.80 carat in the centre. The baguette cuts are an estimated 0.06 each. The single cuts come to around 0.12. Total overall approximate diamond weight of 1.04 carat.

Condition - Some general wear consistent with age, but in good condition. Can be polished to look as new.
Circa - 1940.
Size - Currently P (UK) or 7 1/2 (US). Complementary sizing is available, can go up or down.
Measurements - The middle "square" measures 8.5mm by 8.5mm and sits 3.8mm from the finger.
Metal - Platinum. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1940s.
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