Gatsby Jewellery Ltd has dated this piece to the 1930s.

Accompanied by an independent jewellery report from IGR (#30309963).
Cut – Old mine cuts.
Colour – The centre diamond is I. The sides stones are G to H.
Clarity – The centre is SI1. The side diamonds are VS1 to VS2.

Carat – The centre is a known 1.03 carat with a total approximate weight of 1.83 carat.
Circa – 1930.
Size – L 1/2 (UK) or 5 7/8 (US). Complimentary sizing is available, can be sized up or down.
Measurements – From the outer edge of one diamond to the other is 15mm. The ring is 7mm at the widest point and sits 5.5mm from the finger.
Metal – Platinum. Tested.
com/718655156
Gatsby Jewellery Ltd has dated this piece to the 1930s.
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