Gatsby Jewellery Ltd has dated this piece to the 1950s.
The stone is rubover set within a wonderfully ornate and detailed surround, featuring twelve rose cut diamonds around the angular venting, and calibré cut sapphires capping the ends. On a slender 18k white gold band.

Cut:? The centre diamond is an old mine cut, with rose cut diamonds in the surround. The sapphires are calibré cuts.
Colour:? The centre is light yellow. The smaller diamonds are G to H.
Clarity:? The centres diamond is VS2. The smaller diamonds are SI.

Carat:? The diamond in the centre is approximately 0.40 carat, with a further approximate 0.06 carat of diamonds in the surround. The total sapphire weight is approximately 0.18 carat.
Circa:? 1955.
Size:? Q 1/2 (UK) or 8 1/4 (US). Free sizing available.
Measurements:? The head of the ring is 16.5mm long and 7.6mm at the widest point. Sits 3.5mm from the finger.
Weight:? 2.60 grams.
Metal:? 18k white gold. French hallmarks.
Item # 126213S337
Gatsby Jewellery Ltd has dated this piece to the 1950s.
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