Gatsby Jewellery Ltd has dated this piece to the 1960s.
A total of twelve high white and clean round brilliant cut diamonds surround the centre atop a open, wired gallery. Twelve (six either side) round brilliant cut diamond run down the shoulders of the slim and tapering white gold shank.

Accompanied by a sapphire report from The Gem & Pearl Laboratory stating the sapphire shows no indications of heating.
Cut – Oval cut sapphire and round brilliant cut diamonds.
Colour – The diamonds are F to G.

Clarity – The diamonds are VS1 to VS2.
Carat – The sapphire is 3.42 carat, with a total approximate diamond weight of 1.05 carat.
Circa – 1970.
Measurements – The sapphire is 8.3 x 7.1mm. The head of the ring is 15.2 x 13.2mm and sits 7.5mm from the finger.
Size – K 1/2 (UK) or 5 3/8 (US). Complimentary sizing is available, can go up or down.
Metal – 18k white gold. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1960s.
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