Gatsby Jewellery Ltd has dated this piece to the 1960s.
On a slim and tapering 18k yellow gold shank.

Accompanied by a sapphire report from Gemmological Certification Services (GCS) stating the sapphire shows no indication of heating, and is Sri Lankan (Ceylon) in origin.
Cut – Cushion cut sapphire and pear cut diamonds.

Colour – The diamonds are F to G.
Clarity – The diamonds are VS1 to SI1.
Carat – The sapphire is approximately 3.60 carat. The total approximate diamond weight is 0.70 carat.
Size – M 1/2 (UK) or 6.25 (US). Complimentary sizing is available, can go up or down.

Measurements – The sapphire is approximately 9.3 x 7.3mm. From the outer edge of one diamond to the other 16mm. The ring sits 5.75mm from the finger.
Metal – 18k yellow gold. The diamonds are set in platinum. 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