Gatsby Jewellery Ltd has dated this piece to the 1950s.
The stone is rubover set in 18k yellow gold and surrounded by 24 high white and internally clean round brilliant cut diamonds which graduate in size as they travel around the sapphire. Delightful detailing in the gallery leading to a slim, platinum shank with a further four (two each side) diamond in the shoulders. This is just wonderful.

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 with round brilliant cut diamonds.

Colour – The diamonds are G to H.
Clarity – The sapphire is eye clean. The diamonds are VS1 to VS2.
Carat – The sapphire is 14.48 carat. The total approximate diamond weight is 1.70 carat.
Circa – 1950.
Size – N (UK) or 6.5 (US). Complimentary sizing is available, can go up or down.

Measurements – The sapphire is 16.16 x 13.14mm. The head of the ring is 24.6 x 20.5mm and sits 8.1mm from the finger.
Metal – Platinum. The sapphire is set in 18k yellow gold. Tested.
Video – To view a video of this ring recorded in daylight, please copy / paste the following link into your browser: https://vimeo.com/857474392
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