Gatsby Jewellery Ltd has dated this piece to the 1920s.
The sapphire is secured in an eight-claw yellow gold coronet collet and flanked on either side by a pair of high white old European cut diamonds, weighing approximately 0.25 carat each.

Accompanied by a sapphire report from Gemmoligical Certification Services (GCS) stating the sapphire shows no indication of heating, and is Burmese (Myanmar) in origin.
Cut – Cushion cut sapphire and European cut diamonds.

Colour – The diamonds are G.
Clarity – The sapphire is eye clean. The diamonds are VS2..
Carat – The sapphire is a known 2.47 carat. Each diamond is approximately 0.25 carat.
Circa – 1920.
Size – M (UK) or 6 (US). Complimentary sizing is available, can go up or down.
Measurements – The sapphire is 8.22 x 5.79mm, and sits 5.7mm from the finger.
Metal – Platinum, the pink sapphire is set in 18k yellow gold. Tested.
Gatsby Jewellery Ltd has dated this piece to the 1920s.
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